| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] at a time | 107 |
|
| 2 | [be] [verb] at a time | 107 |
|
| 3 | been [verb] at a [noun] | 103 |
|
| 4 | been [verb] at a [noun sg] | 97 |
|
| 5 | been [verb] at [art] time | 71 |
|
| 6 | been [verb] [prep] a time | 10 |
|
| 7 | been [verb] [prep] a time | 10 |
|
| 8 | been [verb] at a time | 7 |
|
| 9 | been [verb] at a time | 7 |
|
| 10 | [been] [verb] at a time | 7 |
|
