| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [subord] it [is] [to-vb] | 119 |
|
| 2 | [noun sg] [subord] it [is] [to-vb] | 82 |
|
| 3 | [verb] [subord] it [is] [to-vb] | 46 |
|
| 4 | [adj] [subord] it [is] [to-vb] | 44 |
|
| 5 | [adj] [subord] it [is] [to-vb] | 35 |
|
| 6 | [noun pl] [subord] it [is] [to-vb] | 30 |
|
| 7 | [adv] [subord] it [is] [to-vb] | 22 |
|
| 8 | [adv] [subord] it [is] [to-vb] | 20 |
|
| 9 | [vb pp] [subord] it [is] [to-vb] | 19 |
|
| 10 | [conj] [subord] it [is] [to-vb] | 13 |
|
| 11 | [coord] [subord] it [is] [to-vb] | 11 |
|
| 12 | [vb infin] [subord] it [is] [to-vb] | 10 |
|
| 13 | [to-vb] [subord] it [is] [to-vb] | 8 |
|
| 14 | [det] [subord] it [is] [to-vb] | 6 |
|
| 15 | make [subord] it [is] [to-vb] | 6 |
|
| 16 | and [subord] it [is] [to-vb] | 5 |
|
| 17 | difficult [subord] it [is] [to-vb] | 5 |
|
| 18 | [pron] [subord] it [is] [to-vb] | 5 |
|
| 19 | difficult [subord] it [is] [to-vb] | 5 |
|
| 20 | and [subord] it [is] [to-vb] | 5 |
|
| 21 | [subord] it [is] [adj] [to-vb] | 1240 |
|
| 22 | [subord] it [is] [adj] [to-vb] | 1152 |
|
| 23 | [subord] it [is] [verb] [to-vb] | 281 |
|
| 24 | [subord] it [is] possible [to-vb] | 230 |
|
| 25 | [subord] it [is] possible [to-vb] | 230 |
|
| 26 | [subord] it [is] [vb pp] [to-vb] | 181 |
|
| 27 | [subord] it [is] difficult [to-vb] | 132 |
|
| 28 | [subord] it [is] difficult [to-vb] | 132 |
|
| 29 | [subord] it [is] [v-ing] [to-vb] | 95 |
|
| 30 | [subord] it [is] necessary [to-vb] | 90 |
|
