| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [to-vb] [adv] [prep] a time | 8 |
|
| 2 | [verb] [verb] [adv prt] [prep] a time | 7 |
|
| 3 | [verb] [verb] [adv] [prep] a time | 5 |
|
| 4 | [vb infin] [verb] [adv] [prep] a time | 5 |
|
