| Share | Phrase |
|---|
| 12.12% | contaminate environment [perform operation] |
| 9.96% | silicon [does] contaminate |
| 9.44% | contaminate oil [perform operation] |
| 9.12% | contaminate ADVP unacceptably |
| 8.41% | water [using as instrument] contaminate |
| 8.30% | contaminate V-V become |
| 7.40% | contaminate sensor [perform operation] |
| 5.29% | lead [does] contaminate |
| 4.07% | contaminate fuel [perform operation] |
| 3.55% | more [degree] contaminate |
| 3.37% | not contaminate |
| 3.08% | contaminate air [perform operation] |
| 2.53% | contaminate mixture [perform operation] |
| 2.53% | contaminate system [perform operation] |
| 2.15% | contaminate modal may |
| 1.91% | contaminate modal can |
| 1.83% | contaminate surface [perform operation] |
| 1.79% | fuel [does] contaminate |
| 1.54% | contaminate modal will |
| 1.51% | contaminate modal would |