| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] [adv] [to-vb] but | 6 |
|
| 2 | be [adv] [adj] [to-vb] but | 38 |
|
| 3 | be [adv] [adj] [to-vb] but | 35 |
|
| 4 | be [adv] [verb] [to-vb] but | 10 |
|
| 5 | be [adv] difficult [to-vb] but | 9 |
|
| 6 | be [adv] difficult [to-vb] but | 9 |
|
| 7 | be [adv] [vb pp] [to-vb] but | 5 |
|
| 8 | be [adv] [v-ing] [to-vb] but | 5 |
|
