No | Pattern | Freq | Relations |
---|---|---|---|
1 | must have been a [noun] [prep] | 81 | |
2 | [modal v] have been a [noun] for | 39 | |
3 | [vb mod] have been a [noun] for | 39 | |
4 | must have been [art] [noun] for | 13 | |
5 | must have [been] a [noun] for | 9 | |
6 | must [verb] been a [noun] for | 9 | |
7 | must have been a [noun] for | 9 | |
8 | must have be a [noun] for | 9 | |
9 | must have [be] a [noun] for | 9 |