| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [verb] been [prep] | 666 |
|
| 2 | [pron] [verb] been behind | 11 |
|
| 3 | [Wh pn] [verb] [be] behind | 8 |
|
| 4 | [Wh pn] [verb] be behind | 8 |
|
| 5 | [Wh pn] [verb] [been] behind | 7 |
|
