C312312111111331312111133133313331333133322331333133311221123221   >>    C31231211111133131211113313331333133313332233133313331122112322   <<    C312312111111331312111133133313331333133322331333133311221123223   >>      C312312111111331312111133133313331333133322331333133311221123222   >>