| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this [is] [art] main reason | 5 |
|
| 2 | this [is] the main reason | 5 |
|
| 3 | this is [art] main reason | 5 |
|
| 4 | this [is] the main reason | 5 |
|
