C11112331312111112111133132313331333133313233313331333132223223321   >>    C1111233131211111211113313231333133313331323331333133313222322332   <<    C11112331312111112111133132313331333133313233313331333132223223323   >>      C11112331312111112111133132313331333133313233313331333132223223322   >>