| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | many years it was [vb pp] that | 7 |
|
| 2 | many years it [be] [vb pp] that | 7 |
|
| 3 | many years it be [vb pp] that | 7 |
|
| 4 | many years it [was/were] [vb pp] that | 7 |
|
