| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it become [adj] | 96 |
|
| 2 | [coord] it become [adj] | 83 |
|
| 3 | [coord] it [verb] difficult | 14 |
|
| 4 | [conj] it become difficult | 12 |
|
| 5 | [coord] it become difficult | 5 |
|
| 6 | [coord] [pers pn] become difficult | 5 |
|
| 7 | [coord] it become difficult | 5 |
|
| 8 | [coord] [pron] become difficult | 5 |
|
