| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] for [num] months | 191 |
|
| 2 | [vb mod] be [vb pp] for [num] | 136 |
|
| 3 | [vb mod] be [vb pp] [num] months | 9 |
|
| 4 | [vb mod] be [vb pp] for months | 7 |
|
