| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] for a long period of | 7 |
|
| 2 | [noun] for a long period of | 6 |
|
| 3 | [noun sg] for a long period of | 5 |
|
| 4 | for a long period of [noun sg] | 17 |
|
| 5 | for a long period of [noun] | 17 |
|
| 6 | for a long period of time | 14 |
|
| 7 | for a long period of time | 14 |
|
