| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] [pron] [is] [adv] [v-ing] | 27 |
|
| 2 | [verb] [adv] what [is] [adv] [verb] | 19 |
|
| 3 | [verb] [adv] what [be] [adv] [v-ing] | 14 |
|
| 4 | [verb] [adv] what [is] [adv] [v-ing] | 11 |
|
| 5 | [verb] [adv] [Wh det] [is] [adv] [v-ing] | 11 |
|
| 6 | [verb] [adv] what [is] [adv] [v-ing] | 11 |
|
