| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it becomes difficult | 9 |
|
| 2 | that it becomes difficult | 6 |
|
| 3 | [that] it becomes difficult | 6 |
|
| 4 | that it becomes difficult | 6 |
|
| 5 | it becomes [adv] difficult | 26 |
|
| 6 | it becomes [adv] difficult | 26 |
|
| 7 | it becomes increasingly difficult | 8 |
|
| 8 | it becomes increasingly difficult | 8 |
|
| 9 | it becomes very difficult | 7 |
|
| 10 | it becomes very difficult | 7 |
|
| 11 | it becomes difficult [to-vb] | 20 |
|
| 12 | it becomes difficult [verb] | 20 |
|
