| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] long periods [prep] | 47 |
|
| 2 | [verb] long periods of | 29 |
|
| 3 | [verb] long periods of | 29 |
|
| 4 | spend long periods [prep] | 19 |
|
| 5 | [verb] long periods in | 12 |
|
| 6 | [verb] long periods in | 12 |
|
| 7 | [vb past] long periods [prep] | 9 |
|
| 8 | [vb infin] long periods [prep] | 8 |
|
| 9 | [to-vb] long periods [prep] | 7 |
|
| 10 | [v-ing] long periods [prep] | 7 |
|
| 11 | [vb base] long periods [prep] | 6 |
|
| 12 | [vb pp] long periods [prep] | 6 |
|
| 13 | to spend long periods [prep] | 5 |
|
