| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] difficult to distinguish | 51 |
|
| 2 | be difficult to distinguish | 51 |
|
| 3 | [adv] difficult to distinguish | 41 |
|
| 4 | [adv] difficult to distinguish | 40 |
|
| 5 | [is] difficult to distinguish | 25 |
|
| 6 | is difficult to distinguish | 25 |
|
| 7 | [be] difficult to distinguish | 17 |
|
| 8 | be difficult to distinguish | 17 |
|
| 9 | very difficult to distinguish | 8 |
|
| 10 | very difficult to distinguish | 8 |
|
| 11 | often difficult to distinguish | 8 |
|
| 12 | often difficult to distinguish | 8 |
|
| 13 | [pron] difficult to distinguish | 7 |
|
| 14 | [pers pn] difficult to distinguish | 6 |
|
| 15 | it difficult to distinguish | 6 |
|
| 16 | it difficult to distinguish | 6 |
|
| 17 | increasingly difficult to distinguish | 5 |
|
| 18 | increasingly difficult to distinguish | 5 |
|
| 19 | difficult to distinguish [prep] | 57 |
|
| 20 | difficult to distinguish [prep] | 57 |
|
| 21 | difficult to distinguish from | 26 |
|
| 22 | difficult to distinguish from | 26 |
|
| 23 | difficult to distinguish between | 25 |
|
| 24 | difficult to distinguish between | 25 |
|
| 25 | difficult to distinguish [adj] | 11 |
|
| 26 | difficult to distinguish [art] | 8 |
|
| 27 | difficult to distinguish [art] | 8 |
|
| 28 | difficult to distinguish [adj] | 7 |
|
| 29 | difficult to distinguish the | 7 |
|
| 30 | difficult to distinguish [noun] | 7 |
|
