| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] because [pron] is | 297 |
|
| 2 | difficult [conj] [pron] is | 38 |
|
| 3 | difficult because [pron] be | 20 |
|
| 4 | difficult because [pron] [be] | 20 |
|
| 5 | difficult because [pron] [is] | 9 |
|
