C11112331312111112111133133313331333133313331333133313331323131232313321   >>    C1111233131211111211113313331333133313331333133313331333132313123231332   <<    C11112331312111112111133133313331333133313331333133313331323131232313323   >>      C11112331312111112111133133313331333133313331333133313331323131232313322   >>