-| unfold_lref: â\88\80I,G,L1,L2,K1,K2,V,i. â\87©[0, i] L1 ≡ K1. ⓑ{I}V →
- unfold G K1 V K2 â\86\92 â\87©[|L2|, i] L2 ≡ K2 →
+| unfold_lref: â\88\80I,G,L1,L2,K1,K2,V,i. â¬\87[i] L1 ≡ K1. ⓑ{I}V →
+ unfold G K1 V K2 â\86\92 â¬\87[â\93\89, |L2|, i] L2 ≡ K2 →