| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] been [verb] | 7120 |
|
| 2 | [modal v] [verb] been [v-ing] | 1004 |
|
| 3 | [verb] been [verb] [v-ing] | 542 |
|
| 4 | [modal v] [verb] [verb] [v-ing] | 500 |
|
