,------------------+-------+--------+----------.
| Task             | Start | End    | Duration |
+------------------+-------+--------+----------+
| Prototype design | Day 1 | Day 15 | 15 days  |
+------------------+-------+--------+----------+
| Test prototype   | Day 1 | Day 10 | 10 days  |
`------------------+-------+--------+----------'