C11111333133313232233133313331333133112111112113313121111131122112322123231   >>    C1111133313331323223313331333133313311211111211331312111113112211232212323   <<    C11111333133313232233133313331333133112111112113313121111131122112322123233   >>      C11111333133313232233133313331333133112111112113313121111131122112322123232   >>