elim (lsubd_inv_pair1 … H) -H * #L2
[ #HL2 #H destruct /3 width=1/
| #W #V #l #HV #HW #HL2 #H1 #H2 #H3 destruct
- /3 width=3 by lsubd_abbr, lsubd_da_trans/
+ /3 width=3 by lsubd_beta, lsubd_da_trans/
]
| #L1 #L #W #V #l #HV #HW #HL1 #IHL1 #X #H
elim (lsubd_inv_pair1 … H) -H * #L2
- [ #HL2 #H destruct /3 width=5 by lsubd_abbr, lsubd_da_conf/
+ [ #HL2 #H destruct /3 width=5 by lsubd_beta, lsubd_da_conf/
| #W0 #V0 #l0 #_ #_ #_ #H destruct
]
]