| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [modal v] [verb] for [adj] | 38 |
|
| 2 | [pron] [modal v] account for [adj] | 12 |
|
| 3 | which [modal v] account [prep] [adj] | 8 |
|
| 4 | which [modal v] account [prep] [adj] | 8 |
|
| 5 | which [modal v] account for [adj] | 8 |
|
