| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [v-ing] to | 603 |
|
| 2 | [adj] be [v-ing] to | 460 |
|
| 3 | [adj] [modal v] be [v-ing] | 332 |
|
| 4 | [adj] [modal v] be to | 28 |
|
