,--------------------+--------+--------+----------.
| Task               | Start  | End    | Duration |
+--------------------+--------+--------+----------+
| Prototype design   | Day 1  | Day 13 | 13 days  |
+--------------------+--------+--------+----------+
| Test prototype 0   | Day 14 | Day 17 | 4 days   |
+--------------------+--------+--------+----------+
| Test prototype 10  | Day 14 | Day 17 | 4 days   |
+--------------------+--------+--------+----------+
| Test prototype 20  | Day 14 | Day 17 | 4 days   |
+--------------------+--------+--------+----------+
| Test prototype 30  | Day 14 | Day 17 | 4 days   |
+--------------------+--------+--------+----------+
| Test prototype 40  | Day 14 | Day 17 | 4 days   |
+--------------------+--------+--------+----------+
| Test prototype 50  | Day 14 | Day 17 | 4 days   |
+--------------------+--------+--------+----------+
| Test prototype 60  | Day 14 | Day 17 | 4 days   |
+--------------------+--------+--------+----------+
| Test prototype 70  | Day 14 | Day 17 | 4 days   |
+--------------------+--------+--------+----------+
| Test prototype 80  | Day 14 | Day 17 | 4 days   |
+--------------------+--------+--------+----------+
| Test prototype 90  | Day 14 | Day 17 | 4 days   |
+--------------------+--------+--------+----------+
| Test prototype 100 | Day 14 | Day 17 | 4 days   |
`--------------------+--------+--------+----------'