| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] long periods | 64 |
|
| 2 | spend long period | 32 |
|
| 3 | [vb past] long period | 12 |
|
| 4 | [vb infin] long period | 11 |
|
| 5 | [vb base] long period | 10 |
|
| 6 | [vb pp] long period | 10 |
|
| 7 | [v-ing] long period | 9 |
|
| 8 | [to-vb] long period | 8 |
|
| 9 | spend long period | 7 |
|
| 10 | spent long period | 7 |
|
| 11 | to spend long period | 6 |
|
| 12 | spent long period | 5 |
|
| 13 | spend long period | 5 |
|
