C11111333133313232233133313331333133112111112113313331223323131   >>    C1111133313331323223313331333133313311211111211331333122332313   <<    C11111333133313232233133313331333133112111112113313331223323133   >>      C11111333133313232233133313331333133112111112113313331223323132   >>