C11112331312111112111133133313331333132322121111331322333223321   >>    C1111233131211111211113313331333133313232212111133132233322332   <<    C11112331312111112111133133313331333132322121111331322333223323   >>      C11112331312111112111133133313331333132322121111331322333223322   >>