| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] be [verb] [prep] a time | 16 |
|
| 2 | [noun pl] [be] [verb] [prep] a time | 16 |
|
| 3 | [noun pl] [be] [verb] at a time | 15 |
|
| 4 | [noun pl] [was/were] [verb] [prep] a time | 14 |
|
| 5 | [noun pl] [be] [vb pp] [prep] a time | 12 |
|
| 6 | [noun pl] were [verb] [prep] a time | 12 |
|
