C11112331312111112111133132313331333133313232213331333131132211   >>    C1111233131211111211113313231333133313331323221333133313113221   <<    C11112331312111112111133132313331333133313232213331333131132213   >>      C11112331312111112111133132313331333133313232213331333131132212   >>