| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [is] [verb] | 472 |
|
| 2 | but [is] [vb pp] | 359 |
|
| 3 | [conj] [is] used | 195 |
|
| 4 | but [be] used | 15 |
|
| 5 | but [is] use | 7 |
|
