| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [is] difficult distinguish | 7 |
|
| 2 | it [is] [adv] difficult distinguish | 14 |
|
| 3 | it [is] [adv] difficult distinguish | 13 |
|
| 4 | it [is] difficult distinguish [prep] | 6 |
|
| 5 | it [is] difficult distinguish [prep] | 6 |
|
| 6 | it [is] difficult distinguish between | 5 |
|
| 7 | it [is] difficult distinguish [adj] | 5 |
|
| 8 | it [is] difficult distinguish between | 5 |
|
