C11112331312111112111133133313331333133112111113331333133313331323131212231   >>    C1111233131211111211113313331333133313311211111333133313331333132313121223   <<    C11112331312111112111133133313331333133112111113331333133313331323131212233   >>      C11112331312111112111133133313331333133112111113331333133313331323131212232   >>