C1111133313331323223313331333133313311211111211331333133313332233223231   >>    C111113331333132322331333133313331331121111121133133313331333223322323   <<    C1111133313331323223313331333133313311211111211331333133313332233223233   >>      C1111133313331323223313331333133313311211111211331333133313332233223232   >>