| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [adv] a [noun] | 15694 |
|
| 2 | [be] [adv] a [noun sg] | 15337 |
|
| 3 | [be] [adv] [art] period | 35 |
|
| 4 | [be] [adv] a period | 27 |
|
| 5 | [be] [adv] a period | 21 |
|
