| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it [is] not easy [verb] | 19 |
|
| 2 | but it [is] not easy [to-vb] | 19 |
|
| 3 | but it [is] not easy [verb] | 19 |
|
| 4 | but it is not easy [verb] | 15 |
|
