UNWIND_ALL_BUT_RIGHT_RULE : (string list -> thm -> thm)
A |- !z1 ... zr.
t =
(?l1 ... lp. t1 /\ ... /\ eqn1 /\ ... /\ eqnm /\ ... /\ tn)
---------------------------------------------------------------------
A |- !z1 ... zr.
t =
(?l1 ... lp. t1' /\ ... /\ eqn1 /\ ... /\ eqnm /\ ... /\ tn')
#UNWIND_ALL_BUT_RIGHT_RULE [`l2`]
# (ASSUME
# "!f. IMP(f) =
# ?l2 l1.
# (!(x:num). l1 x = (l2 x) - 1) /\
# (!x. f x = (l2 (x+1)) + (l1 (x+2))) /\
# (!x. l2 x = 7)");;
. |- !f.
IMP f =
(?l2 l1.
(!x. l1 x = (l2 x) - 1) /\
(!x. f x = (l2(x + 1)) + ((l2(x + 2)) - 1)) /\
(!x. l2 x = 7))