# testdata file g21a
Format 2.2
gens {a A b B z}
inverses {case_change}
rels {z*z a*z*a*z b*z*b*z a*B*a*B a*a*B*B*a*a*B*B
       a*a*a*B*B*B*a*a*a*B*A*B  a*a*a*b*z*a*a*a*a*B*A*A*B}
