C11111333133313232233133313331333133112111112113313331312111112331313311221   >>    C1111133313331323223313331333133313311211111211331333131211111233131331122   <<    C11111333133313232233133313331333133112111112113313331312111112331313311223   >>      C11111333133313232233133313331333133112111112113313331312111112331313311222   >>