| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adj] [to-vb] which | 76 |
|
| 2 | it is [adj] [to-vb] which | 44 |
|
| 3 | it be difficult [to-vb] which | 23 |
|
| 4 | it be difficult [to-vb] which | 23 |
|
| 5 | it was [adj] [to-vb] which | 22 |
|
| 6 | it be [adj] to know which | 18 |
|
| 7 | it be [adj] to tell which | 16 |
|
| 8 | it be hard [to-vb] which | 16 |
|
| 9 | it be hard [to-vb] which | 15 |
|
| 10 | it be [adj] to say which | 14 |
|
| 11 | it be impossible [to-vb] which | 12 |
|
| 12 | it be impossible [to-vb] which | 12 |
|
| 13 | it 's [adj] [to-vb] which | 11 |
|
| 14 | it be important [to-vb] which | 7 |
|
| 15 | it be important [to-vb] which | 7 |
|
| 16 | it be possible [to-vb] which | 6 |
|
| 17 | it be possible [to-vb] which | 6 |
|
