-#T1 #HT1 #IH1 #T0 #HT10 #T2 #HT02
-@IH -IH /3 width=3 by csx_cpxs_trans, csx_teqx_trans/ -HT1 #V2 #HTV2 #HnTV2
-lapply (teqx_tneqx_trans … HT02 … HnTV2) -HnTV2 #H
-elim (teqx_cpxs_trans … HT02 … HTV2) -T2 #V0 #HTV0 #HV02
-lapply (tneqx_teqx_canc_dx … H … HV02) -H #HnTV0
-elim (teqx_dec T1 T0) #H
-[ lapply (teqx_tneqx_trans … H … HnTV0) -H -HnTV0 #Hn10
- lapply (cpxs_trans … HT10 … HTV0) -T0 #H10
- elim (cpxs_tneqx_fwd_step_sn … H10 … Hn10) -H10 -Hn10
- /3 width=8 by teqx_trans/
-| elim (cpxs_tneqx_fwd_step_sn … HT10 … H) -HT10 -H #T #V #HT1 #HnT1 #HTV #HVT0
- elim (teqx_cpxs_trans … HVT0 … HTV0) -T0
- /3 width=8 by cpxs_trans, teqx_trans/
+#T1 #HT1 #IH1 #T2 #HT12
+@IH -IH /2 width=3 by csx_cpxs_trans/ -HT1 #V2 #HTV2 #HnTV2
+elim (teqx_dec T1 T2) #H
+[ lapply (teqx_tneqx_trans … H … HnTV2) -H -HnTV2 #Hn12
+ lapply (cpxs_trans … HT12 … HTV2) -T2 #H12
+ elim (cpxs_tneqx_fwd_step_sn … H12 … Hn12) -H12 -Hn12
+ /3 width=4 by/
+| elim (cpxs_tneqx_fwd_step_sn … HT12 … H) -HT12 -H
+ /3 width=6 by cpxs_trans/