| File name | Pair | Shared sub-variants | Mechanism |
| extinguish-lii-lie | LII × LIE | N./T. | Structure absorbed into strategy / Strategy absorbed into structure |
| extinguish-lsi-lse | LSI × LSE | S./T. | Procedure absorbed into method / Method absorbed into procedure |
| extinguish-eii-eie | EII × EIE | N./F. | Conviction absorbed into incitement / Incitement absorbed into conviction |
| extinguish-esi-ese | ESI × ESE | S./F. | Particular bond absorbed into atmosphere / Atmosphere absorbed into particular verdict |
| extinguish-sli-sle | SLI × SLE | T./S. | Observation absorbed into governance / Governance absorbed into observation |
| extinguish-sei-see | SEI × SEE | F./S. | Ease absorbed into momentum / Force absorbed into sensation |
| extinguish-ili-ile | ILI × ILE | T./N. | Pattern absorbed into concept / Concept absorbed into pattern |
| extinguish-iei-iee | IEI × IEE | F./N. | Narrative absorbed into possibility / Possibility absorbed into narrative |
The structural pattern is identical across all eight. Each type's full Ego block sits exactly in the other's Contributive capacity — 3d capable, Background/Facile, but co-opted in service of the receiving type's own base. The match is same domain, same sub-variant, opposite orientation: the most similar pairing possible while still being structurally distinct.
This is what distinguishes Extinguishment from every other relation type. The partner's output is not alien (Contrary), not strained (Super-Ego), not misread (Illusionary), not bypassed (Quasi-identity). It is recognised, received, and consumed — redirected into the receiving type's primary orientation without the intended output surviving intact. Each type produces something real. Nothing produced arrives on its own terms. The output is extinguished through absorption, not opposition.
Model A has no framework for this relation. The distinction between same-sub-variant and opposite-sub-variant pairings sharing domain and orientation does not exist at the 8-element level — both would appear as similar types engaging with overlapping elements. Model L makes the structural difference precise: same sub-variant produces Extinguishment; opposite sub-variant produces Illusionary. The register is the mechanism.