| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] at a time | 33 |
|
| 2 | back [prep] a time | 17 |
|
| 3 | out [prep] a time | 16 |
|
| 4 | [adv prt] to a time | 16 |
|
| 5 | up [prep] a time | 14 |
|
| 6 | [adv prt] for a time | 14 |
|
| 7 | off [prep] a time | 6 |
|
| 8 | in [prep] a time | 5 |
|
| 9 | down [prep] a time | 5 |
|
