No | Pattern | Freq | Relations |
---|---|---|---|
1 | must [verb] been [det] [noun] [pron] | 7 | |
2 | must [verb] been [det] [noun] who | 7 | |
3 | must have been [det] [noun] [pron] | 7 | |
4 | must [vb infin] been [det] [noun] [pron] | 7 | |
5 | must [verb] been [det] [noun] [Wh pn] | 7 | |
6 | must [verb] been [det] [noun] who | 7 | |
7 | must have been [det] [noun] [pron] | 7 |