C11112331312111112111133132313331333133313232213331333131111211   >>    C1111233131211111211113313231333133313331323221333133313111121   <<    C11112331312111112111133132313331333133313232213331333131111213   >>      C11112331312111112111133132313331333133313232213331333131111212   >>