C11112331312111112111133133313331333133313331333133313231333133311211331221   >>    C1111233131211111211113313331333133313331333133313331323133313331121133122   <<    C11112331312111112111133133313331333133313331333133313231333133311211331223   >>      C11112331312111112111133133313331333133313331333133313231333133311211331222   >>