No | Pattern | Freq | Relations |
---|---|---|---|
1 | must have [been] [prep] | 294 | |
2 | must have [been] [prep] | 294 | |
3 | [vb mod] have [been] for | 62 | |
4 | [modal v] have [been] for | 62 | |
5 | must [verb] [been] for | 14 | |
6 | must have [be] for | 14 | |
7 | must have [been] for | 14 | |
8 | must have [been] for | 14 |