| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] a [adj] period of | 39 |
|
| 2 | [be] a [adj] period of | 34 |
|
| 3 | [be] a long period of | 7 |
|
| 4 | [be] a long period of | 5 |
|
| 5 | [pron] [be] a period of | 56 |
|
| 6 | [ex0] [be] a period of | 35 |
|
| 7 | there [be] a period of | 35 |
|
| 8 | there [be] a period of | 35 |
|
| 9 | [adj] [be] a period of | 31 |
|
| 10 | [noun] [be] a period of | 22 |
|
| 11 | it [be] a period of | 21 |
|
| 12 | [pers pn] [be] a period of | 21 |
|
| 13 | it [be] a period of | 21 |
|
| 14 | [num] [be] a period of | 16 |
|
| 15 | [modal v] [be] a period of | 15 |
|
| 16 | [vb mod] [be] a period of | 15 |
|
| 17 | [prep] [be] a period of | 14 |
|
| 18 | [noun sg] [be] a period of | 14 |
|
| 19 | this [be] a period of | 14 |
|
| 20 | to [be] a period of | 14 |
|
| 21 | [det] [be] a period of | 14 |
|
| 22 | [prep] [be] a period of | 14 |
|
| 23 | this [be] a period of | 14 |
|
| 24 | to [be] a period of | 14 |
|
| 25 | [verb] [be] a period of | 9 |
|
| 26 | will [be] a period of | 7 |
|
| 27 | have [be] a period of | 7 |
|
| 28 | will [be] a period of | 7 |
|
| 29 | [noun pl] [be] a period of | 6 |
|
| 30 | [adv] [be] a period of | 5 |
|
