| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] [conj] [pron] [verb] | 154 |
|
| 2 | [is] [verb] [conj] it [verb] | 114 |
|
| 3 | [be] [v-ing] [conj] it [verb] | 75 |
|
