| without advancing through an existing opening | 6 | manner |
| for carrying precooled refrigerant gas | 3 | purpose |
| alternatively | 2 | manner |
| catheter → have → channel | 8 |
| catheter → define → channel | 4 |
| catheter → form → channel | 3 |
| negative | neutral | positive |
| 0.049 | 0.898 | 0.052 |
| Raw frequency | 15 |
| Normalized frequency | 0.268 |
| Modifier score | 0.500 |
| Perplexity | 266.077 |