| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be [verb] for | 2544 |
|
| 2 | [prep] be maintain [prep] | 75 |
|
| 3 | [prep] [be] maintain for | 7 |
|
| 4 | [prep] [be] maintain for | 7 |
|
| 5 | [prep] be maintain for | 7 |
|
| 6 | [prep] be maintain for | 7 |
|
