| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb mod] [adv] | 163449 |
|
| 2 | [pron] [vb mod] maintain | 167 |
|
| 3 | [vb mod] [adv] maintain | 105 |
|
| 4 | [pron] [adv] maintain | 93 |
|
