C11112331312111112111133133313331333132323213311211111333131211321   >>    C1111233131211111211113313331333133313232321331121111133313121132   <<    C11112331312111112111133133313331333132323213311211111333131211323   >>      C11112331312111112111133133313331333132323213311211111333131211322   >>