| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [adv] a | 2074 |
|
| 2 | [adv] maintain a | 148 |
|
| 3 | [pron] maintain a | 147 |
|
| 4 | [pron] [adv] maintain | 93 |
|
