| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [be] maintain | 9 |
|
| 2 | could not [be] maintain | 9 |
|
| 3 | could not [be] maintained | 9 |
|
| 4 | could not [be] maintain | 9 |
|
| 5 | could not be maintain | 9 |
|
| 6 | could not be maintain | 9 |
|
