| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have worked hard | 110 |
|
| 2 | have to work hard | 33 |
|
| 3 | had work hard | 33 |
|
| 4 | has work hard | 31 |
|
| 5 | have work hard | 29 |
|
| 6 | 've work hard | 23 |
|
| 7 | have work hard | 13 |
|
