No | Pattern | Freq | Relations |
---|---|---|---|
1 | must be [vb pp] to [be] [verb] | 14 | |
2 | must be [vb pp] to be [verb] | 14 | |
3 | must be [vb pp] to [be] [verb] | 14 | |
4 | must be [vb pp] to [be] [verb] | 14 | |
5 | must be seen to [be] [verb] | 11 | |
6 | must be [vb pp] to [be] [vb pp] | 9 | |
7 | must be [vb pp] to [be] [v-ing] | 5 |