| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [conj] it is | 891 |
|
| 2 | [conj] it is [v-ing] | 842 |
|
| 3 | [vb -s] it is [v-ing] | 125 |
|
| 4 | [vb -s] [conj] is [v-ing] | 13 |
|
