| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [adv] | 27371 |
|
| 2 | [pron] [adv] maintain | 93 |
|
| 3 | could [adv] maintain | 31 |
|
| 4 | [pron] could maintain | 20 |
|
