| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] because [art] | 1001 |
|
| 2 | [adj] because [art] | 786 |
|
| 3 | difficult [conj] [art] | 122 |
|
| 4 | difficult because [art] | 25 |
|
| 5 | difficult because [art] | 25 |
|
