| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | were [verb] at [adj] [noun] | 333 |
|
| 2 | were [verb] at [adj] [noun pl] | 145 |
|
| 3 | be [verb] at [adj] intervals | 87 |
|
| 4 | [be] [verb] at [adj] intervals | 87 |
|
| 5 | [was/were] [verb] at [adj] intervals | 21 |
|
| 6 | were [verb] at [adj] intervals | 16 |
|
| 7 | were [verb] [prep] [adj] intervals | 16 |
|
| 8 | were [verb] at [adj] interval | 16 |
|
| 9 | were [verb] [prep] [adj] intervals | 16 |
|
