C11112331312111112111133133313331333132323213331333133312111133132321111211331   >>    C1111233131211111211113313331333133313232321333133313331211113313232111121133   <<    C11112331312111112111133133313331333132323213331333133312111133132321111211333   >>      C11112331312111112111133133313331333132323213331333133312111133132321111211332   >>