| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [vb past] [conj] | 874 |
|
| 2 | [vb past] [conj] [v-ing] | 822 |
|
| 3 | but [conj] [v-ing] | 109 |
|
| 4 | but [vb past] [v-ing] | 92 |
|
