No | Pattern | Freq | Relations |
---|---|---|---|
1 | must have been [verb] [prep] [adj] | 12 | |
2 | must have been [verb] [prep] [adj] | 12 | |
3 | must [verb] been [verb] [prep] [adj] | 12 | |
4 | must [vb infin] been [verb] [prep] [adj] | 12 | |
5 | must [verb] been [vb pp] [prep] [adj] | 11 |