| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] is [prep] be | 11 |
|
| 2 | [v-ing] [is] [prep] be | 11 |
|
| 3 | [v-ing] [is] to be | 11 |
|
| 4 | [v-ing] [is] to be | 11 |
|
