| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [to-vb] [is] [verb] [adv] | 144 |
|
| 2 | [v-ing] [to-vb] [be] [verb] [adv] | 22 |
|
| 3 | [v-ing] [verb] [is] [verb] [adv] | 15 |
|
