| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [verb] to be | 6208 |
|
| 2 | [be] [v-ing] to be | 5104 |
|
| 3 | [is] [v-ing] [prep] be | 3193 |
|
| 4 | [is] [v-ing] [prep] be | 2346 |
|
| 5 | [is] [v-ing] to [be] | 2306 |
|
| 6 | [is] [v-ing] to be | 2306 |
|
