| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which had [verb] for | 56 |
|
| 2 | which had exist [prep] | 30 |
|
| 3 | which had exist [prep] | 30 |
|
| 4 | which [verb] exist for | 17 |
|
| 5 | which have exist for | 16 |
|
| 6 | [pron] had exist for | 8 |
|
| 7 | which had exist for | 7 |
|
| 8 | which [vb past] exist for | 7 |
|
