| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [v-ing] [prep] what [is] [adv] | 6 |
|
| 2 | [v-ing] [noun] [prep] what [is] [adv] | 6 |
|
| 3 | [v-ing] [prep] what [is] [verb] [adv] | 8 |
|
| 4 | [v-ing] [prep] what [is] [v-ing] [adv] | 6 |
|
| 5 | [v-ing] [prep] what [is] [adv] [verb] | 8 |
|
| 6 | [v-ing] [prep] what [is] [adv] [vb pp] | 7 |
|
| 7 | [v-ing] [prep] what [is] [adv] [art] | 5 |
|
| 8 | [v-ing] [prep] what [is] [adv] [art] | 5 |
|
