| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to [v-ing] is | 20 |
|
| 2 | to having be | 13 |
|
| 3 | to [v-ing] been | 13 |
|
| 4 | to [v-ing] was | 7 |
|
| 5 | to [v-ing] are | 6 |
|
