| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a long [noun] of | 283 |
|
| 2 | [verb] a long [noun sg] of | 270 |
|
| 3 | [verb] a [adj] period of | 135 |
|
| 4 | [verb] a long period [prep] | 26 |
|
| 5 | [verb] [art] long period of | 22 |
|
| 6 | [verb] [art] long period of | 22 |
|
| 7 | [verb] a long period of | 16 |
|
| 8 | [verb] a long period of | 16 |
|
