| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [subord] [verb] | 14554 |
|
| 2 | [adv] [subord] [to-vb] | 2561 |
|
| 3 | [adv] [subord] maintain | 47 |
|
| 4 | [adv] [conj] to maintain | 21 |
|
