No | Pattern | Freq | Relations |
---|---|---|---|
1 | it [vb mod] [vb infin] [been] [noun sg] | 68 | |
2 | it [modal v] [vb infin] [been] [noun sg] | 68 | |
3 | it must [vb infin] [been] [noun] | 41 | |
4 | [pron] must [vb infin] [been] [noun sg] | 29 | |
5 | it must [vb infin] [be] [noun sg] | 13 | |
6 | it must [vb infin] [been] [noun sg] | 13 | |
7 | it must [verb] [been] [noun sg] | 13 |