C11112331312111112111133133313331333132322121111331311332313221   >>    C1111233131211111211113313331333133313232212111133131133231322   <<    C11112331312111112111133133313331333132322121111331311332313223   >>      C11112331312111112111133133313331333132322121111331311332313222   >>