| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | hard as | 283 |
|
| 2 | hard when | 19 |
|
| 3 | hard because | 17 |
|
| 4 | hard if | 15 |
|
| 5 | hard before | 12 |
|
| 6 | hard though | 8 |
|
| 7 | hard since | 5 |
|
