| Share | Phrase |
|---|
| 14.81% | surface irregularity |
| 13.42% | encounter irregularity [perform operation] |
| 11.37% | road irregularity |
| 8.28% | irregularity in roadway |
| 8.08% | irregularity in surface |
| 7.74% | track irregularity |
| 4.48% | terrain irregularity |
| 4.48% | reject irregularity [perform operation] |
| 3.72% | irregularity [does] cause |
| 3.02% | film irregularity |
| 2.21% | accommodate irregularity [perform operation] |
| 2.09% | edge irregularity |
| 2.08% | offset irregularity [perform operation] |
| 2.04% | torque irregularity |
| 1.84% | small [size] irregularity |
| 1.74% | vertical [direction] irregularity |
| 1.61% | detect irregularity [perform operation] |
| 1.45% | have irregularity [perform operation] |
| 1.34% | eliminate irregularity [perform operation] |
| 1.29% | cause irregularity [perform operation] |
| 1.17% | motor irregularity |
| 1.03% | signal irregularity |
| 0.60% | not irregularity |