| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [vb mod] | 26 |
|
| 2 | a [adj] period will | 8 |
|
| 3 | a [adj] period will | 8 |
|
| 4 | a [adj] period may | 8 |
|
| 5 | a [adj] period may | 8 |
|
| 6 | a long period [modal v] | 5 |
|
