| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be a period of | 15 |
|
| 2 | [modal v] be a period of | 15 |
|
| 3 | [vb mod] [be] a period of | 15 |
|
| 4 | [modal v] [be] a period of | 15 |
|
| 5 | will [be] a period of | 7 |
|
| 6 | will [be] a period of | 7 |
|
