| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [conj] it is [to-vb] | 8 |
|
| 2 | [vb mod] [vb infin] [conj] it is [to-vb] | 8 |
|
| 3 | must [vb infin] [conj] it is [to-vb] | 5 |
|
| 4 | must [vb infin] [conj] it is [to-vb] | 5 |
|
| 5 | [vb infin] [conj] it is [adj] [to-vb] | 64 |
|
| 6 | [vb infin] [conj] it is [adj] [to-vb] | 61 |
|
| 7 | [vb infin] [conj] it is possible [to-vb] | 15 |
|
| 8 | [vb infin] [conj] it is possible [to-vb] | 15 |
|
| 9 | [vb infin] [conj] it is necessary [to-vb] | 10 |
|
| 10 | [vb infin] [conj] it is necessary [to-vb] | 10 |
|
