No | Pattern | Freq | Relations |
---|---|---|---|
1 | could [not/n't] have been [adj] | 116 | |
2 | [vb mod] [not/n't] have been [det] | 80 | |
3 | [modal v] [not/n't] have been [det] | 80 | |
4 | could [adv] have been [det] | 25 | |
5 | could [not/n't] have [been] [det] | 19 | |
6 | could [not/n't] have been [det] | 19 | |
7 | could [not/n't] have [be] [det] | 19 | |
8 | could [not/n't] have be [det] | 19 | |
9 | could [not/n't] [verb] been [det] | 19 |