C11111333133313232233133313331333133112111112113313331312111113231333131331121   >>    C1111133313331323223313331333133313311211111211331333131211111323133313133112   <<    C11111333133313232233133313331333133112111112113313331312111113231333131331123   >>      C11111333133313232233133313331333133112111112113313331312111113231333131331122   >>