| on the front | 8 | location |
| for primary air stream | 4 | purpose |
| for wall | 2 | purpose |
| base → have → hole | 19 |
| base → have → two holes | 5 |
| base → have → three holes | 3 |
| negative | neutral | positive |
| 0.127 | 0.807 | 0.066 |
| Raw frequency | 27 |
| Normalized frequency | 0.509 |
| Modifier score | 0.500 |
| Perplexity | 296.378 |