| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | more and more [adj] [to-vb] | 9 |
|
| 2 | more and more [adj] [to-vb] | 9 |
|
| 3 | more and more difficult [to-vb] | 5 |
|
| 4 | more and more difficult [to-vb] | 5 |
|
