| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] for a [adj] period of | 29 |
|
| 2 | [vb pp] [prep] a long period of | 27 |
|
| 3 | [vb pp] [prep] a long period of | 27 |
|
| 4 | [verb] for a long period of | 8 |
|
| 5 | [vb pp] for a long period [prep] | 7 |
|
| 6 | [vb pp] for a long period [prep] | 7 |
|
| 7 | [vb pp] for a long [noun] of | 6 |
|
| 8 | [vb pp] for [art] long period of | 6 |
|
| 9 | [vb pp] for [art] long period of | 6 |
|
| 10 | [vb pp] for a long [noun sg] of | 6 |
|
| 11 | [vb pp] for a long period of | 5 |
|
| 12 | [vb pp] for a long period of | 5 |
|
| 13 | [vb pp] for a long period of | 5 |
|
| 14 | [vb pp] for a long period of | 5 |
|
