C11111333133313232233133313331333133112111112113313331312111112121111113312131   >>    C1111133313331323223313331333133313311211111211331333131211111212111111331213   <<    C11111333133313232233133313331333133112111112113313331312111112121111113312133   >>      C11111333133313232233133313331333133112111112113313331312111112121111113312132   >>