| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [prep] | 79530 |
|
| 2 | to [be] [prep] | 9098 |
|
| 3 | to [be] [v-ing] | 7591 |
|
| 4 | to [v-ing] [prep] | 2070 |
|
