| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb mod] appear to [be] | 211 |
|
| 2 | problem [vb mod] [verb] to [be] | 15 |
|
| 3 | problem [modal v] appear to [be] | 5 |
|
| 4 | problem [vb mod] appear [prep] [be] | 5 |
|
