The bottom or lowest part.
| BASE | linked | BACK |
| BASE | linked | BACK |
| BASE | linked | ROOT |
| BASE | linked | FOOT OR LEG |
| FOOT OR LEG | linked | BASE |
| ROOT | linked | BASE |
| BACK | linked | BASE |
| FOOT OR LEG | linked | BASE |
| ROOT | linked | BASE |
| SKELETON | linked | BASE |
| BACK | linked | BASE |
| FOOT OR LEG | linked | BASE |
| ROOT | linked | BASE |
| Id | Concept in source | Conceptlist |
|---|---|---|