| Share | Phrase |
|---|
| 23.73% | burden on driver |
| 19.02% | lighten burden [perform operation] |
| 16.90% | impose burden [perform operation] |
| 12.95% | reduce burden [perform operation] |
| 7.34% | force burden [perform operation] |
| 6.70% | become burden [perform operation] |
| 5.04% | place burden [perform operation] |
| 4.60% | additional [importance] burden |
| 3.68% | increase burden [perform operation] |