C11112331312111112111133133313331333132322121111331323223311331   >>    C1111233131211111211113313331333133313232212111133132322331133   <<    C11112331312111112111133133313331333132322121111331323223311333   >>      C11112331312111112111133133313331333132322121111331323223311332   >>