| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and [adv] [verb] a | 2629 |
|
| 2 | and [adv] maintain [art] | 23 |
|
| 3 | [conj] [adv] maintain a | 20 |
|
| 4 | and [adv] maintain a | 12 |
|
