| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [v-ing] to | 603 |
|
| 2 | [conj] [modal v] be [v-ing] | 375 |
|
| 3 | [conj] be [v-ing] to | 268 |
|
| 4 | [conj] [modal v] be to | 12 |
|
