| Share | Phrase |
|---|
| 25.40% | lighten burden [perform operation] |
| 19.47% | lighten weight [perform operation] |
| 15.43% | have [does] lighten |
| 13.13% | lighten force [perform operation] |
| 9.73% | lighten load [perform operation] |
| 8.03% | lighten operation [perform operation] |
| 5.28% | possible to lighten |
| 3.50% | lighten modal can |