| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be several [noun] before | 18 |
|
| 2 | [vb mod] be [adj] month before | 16 |
|
| 3 | [vb mod] be [det] month before | 11 |
|
| 4 | [vb mod] be several month [conj] | 7 |
|
| 5 | [vb mod] [be] several month before | 7 |
|
| 6 | [modal v] be several month before | 7 |
|
| 7 | [vb mod] be several month before | 7 |
|
