| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] long periods | 127 |
|
| 2 | [verb] [prep] long period | 111 |
|
| 3 | [verb] for long period | 98 |
|
| 4 | [vb pp] [prep] long period | 63 |
|
| 5 | [to-vb] [prep] long period | 18 |
|
| 6 | [verb] [prep] longer period | 16 |
|
| 7 | [vb infin] [prep] long period | 14 |
|
| 8 | [verb] over long period | 10 |
|
| 9 | [vb base] [prep] long period | 10 |
|
| 10 | [v-ing] [prep] long period | 10 |
|
| 11 | [vb past] [prep] long period | 9 |
|
| 12 | work [prep] long period | 5 |
|
