| Share | Phrase |
|---|
| 17.32% | tertiary [numeric] air |
| 12.22% | tertiary [numeric] amine |
| 10.72% | tertiary [numeric] ether |
| 8.24% | tertiary [numeric] alcohol |
| 7.96% | tertiary [numeric] restrictor |
| 7.68% | tertiary [numeric] fuel |
| 5.86% | tertiary [numeric] zone |
| 4.60% | tertiary [numeric] winding |
| 4.53% | tertiary [numeric] electrode |
| 3.63% | tertiary [numeric] group |
| 3.33% | tertiary [numeric] means |
| 1.80% | tertiary [numeric] passage |
| 1.70% | tertiary [numeric] atom |
| 1.59% | tertiary [numeric] end |
| 1.59% | tertiary [numeric] event |
| 1.59% | tertiary [numeric] flow |
| 1.59% | tertiary [numeric] method |
| 1.59% | tertiary [numeric] passageway |
| 1.40% | tertiary [numeric] injector |
| 0.95% | sometimes [temporal] tertiary |