No | Pattern | Freq | Relations |
---|---|---|---|
1 | [pers pn] must have been [prep] this | 7 | |
2 | [pron] must have been [prep] this | 7 | |
3 | it must have been [prep] this | 5 | |
4 | it must have been [prep] this | 5 | |
5 | must have been [prep] this [noun] | 5 | |
6 | must have been [prep] this [noun sg] | 5 |