C11112331312111112111133133313331333133313123313331323223321321   >>    C1111233131211111211113313331333133313331312331333132322332132   <<    C11112331312111112111133133313331333133313123313331323223321323   >>      C11112331312111112111133133313331333133313123313331323223321322   >>