| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [verb] but | 24 |
|
| 2 | it [is] [vb pp] but | 16 |
|
| 3 | it is [verb] but | 14 |
|
| 4 | it 's [verb] but | 10 |
|
| 5 | it [is] [v-ing] but | 8 |
|
