C11112331312111112111133132313331333133313233313113313331333133313331311311221   >>    C1111233131211111211113313231333133313331323331311331333133313331333131131122   <<    C11112331312111112111133132313331333133313233313113313331333133313331311311223   >>      C11112331312111112111133132313331333133313233313113313331333133313331311311222   >>