| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have a hard time | 5 |
|
| 2 | [noun pl] have a hard time | 5 |
|
| 3 | have a hard time [verb] | 6 |
|
| 4 | have a hard time [v-ing] | 6 |
|
