| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [noun] [vb mod] [ex0] [be] for | 8 |
|
| 2 | what [noun] [modal v] [ex0] [be] for | 8 |
|
| 3 | what [noun] [ex0] [be] for [v-ing] | 5 |
|
| 4 | what [noun] [ex0] [be] for [verb] | 5 |
|
