No | Pattern | Freq | Relations |
---|---|---|---|
1 | [modal v] [verb] been a [adj] factor | 9 | |
2 | [vb mod] [verb] been a [adj] factor | 9 | |
3 | [modal v] have been a [adj] factor | 9 | |
4 | [modal v] [vb infin] been a [adj] factor | 9 | |
5 | [modal v] have been a [adj] factor | 9 | |
6 | may [verb] been a [adj] factor | 5 | |
7 | may [verb] been a [adj] factor | 5 |