| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] [verb] been [v-ing] [prep] | 2748 |
|
| 2 | [pers pn] could [verb] been [v-ing] | 69 |
|
| 3 | [pers pn] could [verb] [v-ing] [prep] | 55 |
|
| 4 | [pers pn] could [verb] been [prep] | 41 |
|
| 5 | could [verb] been [v-ing] [prep] | 31 |
|
