No | Pattern | Freq | Relations |
---|---|---|---|
1 | [modal v] have [been] [adv] a | 61 | |
2 | must have [been] [adv] [art] | 39 | |
3 | must have [been] [adv] [art] | 39 | |
4 | must have [been] [adv] a | 33 | |
5 | must have [been] [adv] a | 28 | |
6 | must have [be] [adv] a | 27 | |
7 | must [verb] [been] [adv] a | 27 |