C11112331312111112111133132313331333133313232212111112322233231   >>    C1111233131211111211113313231333133313331323221211111232223323   <<    C11112331312111112111133132313331333133313232212111112322233233   >>      C11112331312111112111133132313331333133313232212111112322233232   >>