| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] a long period | 23 |
|
| 2 | [be] [vb pp] [prep] a long period | 23 |
|
| 3 | have [vb pp] [prep] a long period | 15 |
|
| 4 | [verb] [vb pp] [prep] a long period | 15 |
|
| 5 | [vb -s] [vb pp] [prep] a long period | 6 |
|
| 6 | [adv] [vb pp] [prep] a long period | 6 |
|
| 7 | [adv] [vb pp] [prep] a long period | 6 |
|
| 8 | has [vb pp] [prep] a long period | 6 |
|
| 9 | was [vb pp] [prep] a long period | 5 |
|
| 10 | [been] [vb pp] [prep] a long period | 5 |
|
| 11 | been [vb pp] [prep] a long period | 5 |
|
| 12 | [was/were] [vb pp] [prep] a long period | 5 |
|
| 13 | [vb pp] [adv] [prep] a long period | 7 |
|
| 14 | [vb pp] [prep] a long period [prep] | 28 |
|
| 15 | [vb pp] [prep] a long period [prep] | 28 |
|
| 16 | [vb pp] [prep] a long period of | 24 |
|
| 17 | [vb pp] [prep] a long period of | 24 |
|
| 18 | [vb pp] [prep] a long period and | 5 |
|
| 19 | [vb pp] [prep] a long period [coord] | 5 |
|
| 20 | [vb pp] [prep] a long period [conj] | 5 |
|
| 21 | [vb pp] [prep] a long period and | 5 |
|
