Missing '{': write 'group collection2 {' and close it with '}'                                                                                                                                             
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                             first                                                                                                                                             
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                        second                                                                                                                                                 
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                            fourth                                                                                                                                             
                                                                                                                                                                                                                               
                                                                                                                                                                                                                          third
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                             collection2                                                                                                                                                                                       
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                                                                                                                                                                               
                                                                            fifth