No | Pattern | Freq | Relations |
---|---|---|---|
1 | [vb mod] [be] required for [adj] | 9 | |
2 | [modal v] be required for [adj] | 9 | |
3 | [modal v] be required for [adj] | 9 | |
4 | [modal v] [be] required for [adj] | 9 | |
5 | may [be] required for [adj] | 6 | |
6 | may [be] required for [adj] | 6 |