C11111333133313232233133313331333133112111112113313331312111113332123211111121   >>    C1111133313331323223313331333133313311211111211331333131211111333212321111112   <<    C11111333133313232233133313331333133112111112113313331312111113332123211111123   >>      C11111333133313232233133313331333133112111112113313331312111113332123211111122   >>