C312312111111331312111133133313331333133322331333131322331312121   >>    C31231211111133131211113313331333133313332233133313132233131212   <<    C312312111111331312111133133313331333133322331333131322331312123   >>      C312312111111331312111133133313331333133322331333131322331312122   >>