,------+--------+--------+----------.
| Task | Start  | End    | Duration |
+------+--------+--------+----------+
| A    | Dec 30 | Jan 3  | 5 days   |
+------+--------+--------+----------+
| B    | Jan 9  | Jan 22 | 14 days  |
+------+--------+--------+----------+
| C    | Jan 20 | Jan 24 | 5 days   |
+------+--------+--------+----------+
| D    | Jan 6  | Jan 10 | 5 days   |
`------+--------+--------+----------'