| Share | Phrase |
| 10.94% | inadequate [amount] flow |
| 8.76% | inadequate [amount] lubrication |
| 8.03% | inadequate [amount] become |
| 7.70% | inadequate [amount] prove |
| 7.53% | inadequate [amount] drying |
| 7.27% | inadequate [amount] pressure |
| 7.27% | inadequate [amount] supply |
| 6.80% | inadequate [amount] control |
| 6.14% | inadequate [amount] amount |
| 4.92% | inadequate [amount] capacity |
| 4.57% | inadequate [amount] cooling |
| 4.50% | inadequate [amount] force |
| 4.22% | inadequate [amount] power |
| 3.96% | inadequate [amount] rate |
| 3.79% | inadequate [amount] system |
| 3.53% | inadequate [amount] time |