| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [pron] [is] often difficult [verb] | 23 |
|
| 2 | [coord] [pron] [is] often difficult [verb] | 10 |
|
| 3 | that [pron] [is] often difficult [verb] | 9 |
|
| 4 | that [pron] [is] often difficult [verb] | 9 |
|
| 5 | [that] [pron] [is] often difficult [verb] | 9 |
|
| 6 | [noun] [pron] [is] often difficult [verb] | 5 |
|
| 7 | but [pron] [is] often difficult [verb] | 5 |
|
| 8 | but [pron] [is] often difficult [verb] | 5 |
|
| 9 | and [pron] [is] often difficult [verb] | 5 |
|
| 10 | and [pron] [is] often difficult [verb] | 5 |
|
| 11 | [pron] [is] often [adv] difficult [verb] | 12 |
|
| 12 | [pron] [is] often [adv] difficult [verb] | 11 |
|
| 13 | [pron] [is] often very difficult [verb] | 8 |
|
| 14 | [pron] [is] often very difficult [verb] | 8 |
|
| 15 | [pron] [is] often difficult [verb] [art] | 18 |
|
| 16 | [pron] [is] often difficult [verb] [art] | 18 |
|
| 17 | [pron] [is] often difficult [verb] the | 13 |
|
| 18 | [pron] [is] often difficult [verb] the | 13 |
|
| 19 | [pron] [is] often difficult [verb] [prep] | 11 |
|
| 20 | [pron] [is] often difficult [verb] [prep] | 11 |
|
| 21 | [pron] [is] often difficult [verb] [adj] | 10 |
|
| 22 | [pron] [is] often difficult [verb] [adv] | 8 |
|
| 23 | [pron] [is] often difficult [verb] [det] | 5 |
|
| 24 | [pron] [is] often difficult [verb] [conj] | 5 |
|
| 25 | [pron] [is] often difficult [verb] [adj] | 5 |
|
| 26 | [pron] [is] often difficult [verb] [subord] | 5 |
|
