| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] difficult time | 24 |
|
| 2 | [prep] [art] difficult time | 24 |
|
| 3 | [verb] [art] difficult time | 22 |
|
| 4 | be [art] difficult time | 20 |
|
| 5 | [be] [art] difficult time | 20 |
|
| 6 | have [art] difficult time | 17 |
|
| 7 | at [art] difficult time | 13 |
|
| 8 | at [art] difficult time | 13 |
|
| 9 | [vb past] [art] difficult time | 10 |
|
| 10 | [is] [art] difficult time | 8 |
|
| 11 | had [art] difficult time | 8 |
|
| 12 | through [art] difficult time | 7 |
|
| 13 | through [art] difficult time | 7 |
|
| 14 | was [art] difficult time | 6 |
|
| 15 | is [art] difficult time | 6 |
|
| 16 | [was/were] [art] difficult time | 6 |
|
| 17 | had [art] difficult time | 5 |
|
| 18 | [vb pp] [art] difficult time | 5 |
|
| 19 | [art] [adv] difficult time | 32 |
|
| 20 | [art] [adv] difficult time | 32 |
|
| 21 | [art] very difficult time | 13 |
|
| 22 | [art] very difficult time | 13 |
|
| 23 | [art] most difficult time | 5 |
|
| 24 | [art] most difficult time | 5 |
|
| 25 | [art] difficult time [prep] | 34 |
|
| 26 | [art] difficult time [prep] | 34 |
|
| 27 | [art] difficult time for | 19 |
|
| 28 | [art] difficult time for | 19 |
|
| 29 | [art] difficult time [verb] | 7 |
|
| 30 | [art] difficult time [v-ing] | 6 |
|
