C11111333133313232233133313331333133112111112113313113121111121111331313113311   >>    C1111133313331323223313331333133313311211111211331311312111112111133131311331   <<    C11111333133313232233133313331333133112111112113313113121111121111331313113313   >>      C11111333133313232233133313331333133112111112113313113121111121111331313113312   >>