| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] it [is] [adj] [to-vb] | 159 |
|
| 2 | [Wh adv] it is [adj] [verb] | 140 |
|
| 3 | why it [is] [adj] [verb] | 59 |
|
| 4 | [Wh adv] it [is] possible [verb] | 42 |
|
| 5 | where it [is] [adj] [verb] | 32 |
|
| 6 | when it [is] [adj] [verb] | 29 |
|
| 7 | [Wh adv] it [is] important [verb] | 27 |
|
| 8 | how it [is] [adj] [verb] | 26 |
|
| 9 | [Wh adv] it 's [adj] [verb] | 23 |
|
| 10 | [Wh adv] it [is] necessary [verb] | 20 |
|
| 11 | however it [is] [adj] [verb] | 12 |
|
| 12 | [Wh adv] it [is] difficult [verb] | 11 |
|
| 13 | [Wh adv] it [is] [adj] have | 11 |
|
| 14 | [Wh adv] it [is] [adj] to have | 10 |
|
| 15 | [Wh adv] it [is] likely [verb] | 7 |
|
| 16 | [Wh adv] it [is] essential [verb] | 6 |
|
| 17 | [Wh adv] it [is] [adj] see | 5 |
|
| 18 | [Wh adv] it [is] [adj] use | 5 |
|
| 19 | [Wh adv] it [is] [adj] to see | 5 |
|
| 20 | [Wh adv] it [is] hard [verb] | 5 |
|
