| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and it [is] difficult [verb] | 100 |
|
| 2 | [noun pl] and it [is] [verb] | 78 |
|
| 3 | [noun pl] it [is] difficult [verb] | 36 |
|
| 4 | [noun pl] and it [is] difficult | 18 |
|
