C11112331312111112111133133313331333132313233313231133132223321   >>    C1111233131211111211113313331333133313231323331323113313222332   <<    C11112331312111112111133133313331333132313233313231133132223323   >>      C11112331312111112111133133313331333132313233313231133132223322   >>