| 1 | This could only be the head of a column; and of what column? | |
| 2 | Terry's column was to join him in two days. | |
| 3 | The smaller male leads a female on a single file march. | |
| 4 | We should use our secondary forces to pin down several enemy columns. | |
| 5 | Jog easy for five minutes to warm up, then get in single file. |
