<(ldrop_inv_O2 … H) in HL12; -H /3 width=3/
| elim (IHL12 … HLK1) -L1 /3 width=3/
]
-| #L1 #L2 #W #V #W1 #V2 #l #HV #HW #HW1 #HV2 #_ #IHL12 #K1 #e #H
+| #L1 #L2 #W #V #l #H1W #HV #HVW #H2W #H1l #H2l #_ #IHL12 #K1 #e #H
elim (ldrop_inv_O1_pair1 … H) -H * #He #HLK1
[ destruct
elim (IHL12 L1 0) -IHL12 // #X #HL12 #H
- <(ldrop_inv_O2 … H) in HL12; -H /3 width=6/
+ <(ldrop_inv_O2 … H) in HL12; -H /3 width=4/
| elim (IHL12 … HLK1) -L1 /3 width=3/
]
]
<(ldrop_inv_O2 … H) in HL12; -H /3 width=3/
| elim (IHL12 … HLK2) -L2 /3 width=3/
]
-| #L1 #L2 #W #V #W1 #V2 #l #HV #HW #HW1 #HV2 #_ #IHL12 #K2 #e #H
+| #L1 #L2 #W #V #l #H1W #HV #HVW #H2W #H1l #H2l #_ #IHL12 #K2 #e #H
elim (ldrop_inv_O1_pair1 … H) -H * #He #HLK2
[ destruct
elim (IHL12 L2 0) -IHL12 // #X #HL12 #H
- <(ldrop_inv_O2 … H) in HL12; -H /3 width=6/
+ <(ldrop_inv_O2 … H) in HL12; -H /3 width=4/
| elim (IHL12 … HLK2) -L2 /3 width=3/
]
]