C11112331312111112111133133313331333133313122111133133313113313331312221   >>    C1111233131211111211113313331333133313331312211113313331311331333131222   <<    C11112331312111112111133133313331333133313122111133133313113313331312223   >>      C11112331312111112111133133313331333133313122111133133313113313331312222   >>