| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [verb] for [det] | 84 |
|
| 2 | which account for [adj] | 59 |
|
| 3 | [pron] account for [det] | 46 |
|
| 4 | which account for [det] | 24 |
|
| 5 | which account [prep] [det] | 24 |
|
| 6 | which account [prep] [det] | 24 |
|
