| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] [art] | 7494 |
|
| 2 | [v-ing] whether [art] | 359 |
|
| 3 | [is] whether [art] | 314 |
|
| 4 | [is] [v-ing] whether | 44 |
|
