| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] to be | 8901 |
|
| 2 | [am/are] [v-ing] to | 4006 |
|
| 3 | [am/are] to be | 2985 |
|
| 4 | [am/are] [v-ing] be | 976 |
|
