F
M.a |= F & a |= 
f2 & FN.a |= F & Fconcl.a |
F
FM.a |= F & FN.a |= F & a | f2 & Fconcl.a | F < M @ (f2.N),concl > a | < M @ N,f2.concl > 
i.
UnfoldTopAb i THEN AbReduce i
THEN
Rewrite
(HigherC
(LemmaC
Thm* P:(T
Prop), L,M:T List.
x(L @ M).P(x) 
xL.P(x) & xM.P(x)))
i
THEN
AbReduce i)| 1 | 6. FM.a |= F & a |= f2 & FN.a |= F & Fconcl.a | F FM.a |= F & FN.a |= F & a | f2 & Fconcl.a | F |
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