| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [adv] for a [adj] | 251 |
|
| 2 | [adv] for a [adj] period | 67 |
|
| 3 | [be] [adv] a [adj] period | 11 |
|
| 4 | [be] for a [adj] period | 10 |
|
