# g2.g  a test grammar for the project
#
# G = (V, T, P, S)   V={S, A, B, C}   T={a, b, c, d}    S=S
# 
S -> AB
A -> aAb
A -> ab
B -> cBd
B -> cd
C -> bc
C -> bCc
S -> aCd
S -> aSd