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