| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [vb pp] [prep] [art] period | 31 |
|
| 2 | have [been] [vb pp] [prep] [art] period | 31 |
|
| 3 | [vb past] [been] [vb pp] [prep] [art] period | 9 |
|
| 4 | had [been] [vb pp] [prep] [art] period | 9 |
|
| 5 | has [been] [vb pp] [prep] [art] period | 8 |
|
| 6 | [vb -s] [been] [vb pp] [prep] [art] period | 8 |
|
| 7 | [adv] [been] [vb pp] [prep] [art] period | 7 |
|
| 8 | [vb base] [been] [vb pp] [prep] [art] period | 7 |
|
| 9 | have [been] [vb pp] [prep] [art] period | 6 |
|
| 10 | [been] [adv] [vb pp] [prep] [art] period | 5 |
|
| 11 | [been] [adv] [vb pp] [prep] [art] period | 5 |
|
| 12 | [been] [vb pp] [prep] [art] [adj] period | 34 |
|
| 13 | [been] [vb pp] [prep] [art] [adj] period | 30 |
|
| 14 | [been] [vb pp] [prep] [art] [noun] period | 5 |
|
| 15 | [been] [vb pp] [prep] [art] long period | 5 |
|
| 16 | [been] [vb pp] [prep] [art] long period | 5 |
|
| 17 | [been] [vb pp] [prep] [art] period [prep] | 28 |
|
| 18 | [been] [vb pp] [prep] [art] period [prep] | 28 |
|
| 19 | [been] [vb pp] [prep] [art] period of | 21 |
|
| 20 | [been] [vb pp] [prep] [art] period of | 21 |
|
