| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] be [v-ing] a tough [noun sg] | 8 |
|
| 2 | [noun] be having a tough [noun sg] | 7 |
|
| 3 | [noun] be [verb] a tough time | 7 |
|
| 4 | [noun] be have a tough [noun sg] | 7 |
|
