No | Pattern | Freq | Relations |
---|---|---|---|
1 | is [adj] [to-vb] [adj] [noun pl] | 427 | |
2 | is [adj] [to-vb] [adj] [noun pl] | 407 | |
3 | is difficult [to-vb] [adj] [noun] | 62 | |
4 | be difficult [to-vb] [adj] [noun pl] | 59 | |
5 | [be] difficult [to-vb] [adj] [noun pl] | 59 | |
6 | is difficult [to-vb] [adj] [noun pl] | 54 | |
7 | is difficult [to-vb] [adj] [noun pl] | 34 | |
8 | [is] difficult [to-vb] [adj] [noun pl] | 34 | |
9 | is difficult [verb] [adj] [noun pl] | 34 |