@startuml !pragma teoz true hide footbox participant a participant b participant c control d participant e participant f a->b: 1 create c & b->c: 2 group #Transparent Parent Group b->c: 2.1 create d & c->d: 2.2 group #LightGrey Nested Group d->c: 3.1 c->d: 3.2 create e d->e: 4 e->d: 5 & d->b: 6 end group end group @enduml Submit amiga aws-orange black-knight bluegray blueprint cerulean-outline cerulean crt-amber crt-green cyborg-outline cyborg hacker lightgray mars materia-outline materia metal mimeograph minty plain reddress-darkblue reddress-darkgreen reddress-darkorange reddress-darkred reddress-lightblue reddress-lightgreen reddress-lightorange reddress-lightred sandstone silver sketchy-outline sketchy spacelab spacelab-white superhero-outline superhero toy united vibrant       🎉 Discover the future PlantUML Web Editor! 🚀  PNG  SVG  ASCII Art