| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if he [verb] [been] [v-ing] | 87 |
|
| 2 | [vb pp] if he [verb] [been] | 26 |
|
| 3 | [vb pp] he [verb] [been] [v-ing] | 7 |
|
