No | Pattern | Freq | Relations |
---|---|---|---|
1 | could [verb] been [det] [adj] [noun sg] | 5 | |
2 | could [verb] been [det] [adj] [noun] | 5 | |
3 | could have been [det] [adj] [noun] | 5 | |
4 | could have been [det] [adj] [noun] | 5 | |
5 | could [vb infin] been [det] [adj] [noun] | 5 |