C11111333133313232233133313331333133112111112113313113311212312321   >>    C1111133313331323223313331333133313311211111211331311331121231232   <<    C11111333133313232233133313331333133112111112113313113311212312323   >>      C11111333133313232233133313331333133112111112113313113311212312322   >>