Mab + cd:
f+
s+
e
e
e
e
For RE
ab + cd:
a
sa
fa
b
sb
fb
e
Mab:
c
sc
fc
d
sd
fd
e
Mcd:
For RE ab:
a
sa
fa
b
sb
fb
e
Mab:
For RE cd:
c
sc
fc
d
sd
fd
e
Mcd:
RE to FA: Example 2/3
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