,-------------------+--------+--------+----------.
| Task              | Start  | End    | Duration |
+-------------------+--------+--------+----------+
| Prototype design  | Day 1  | Day 13 | 13 days  |
+-------------------+--------+--------+----------+
| Test prototype 40 | Day 14 | Day 17 | 4 days   |
`-------------------+--------+--------+----------'