C11111333133313232233133313331333133112111112113313121111121311   >>    C1111133313331323223313331333133313311211111211331312111112131   <<    C11111333133313232233133313331333133112111112113313121111121313   >>      C11111333133313232233133313331333133112111112113313121111121312   >>