C11112331312111112111133132313331333133313232212111111331323211221   >>    C1111233131211111211113313231333133313331323221211111133132321122   <<    C11112331312111112111133132313331333133313232212111111331323211223   >>      C11112331312111112111133132313331333133313232212111111331323211222   >>