C111123313121111121111331333133313331311331333131211113313331333133313233133221   >>    C11112331312111112111133133313331333131133133313121111331333133313331323313322   <<    C111123313121111121111331333133313331311331333131211113313331333133313233133223   >>      C111123313121111121111331333133313331311331333131211113313331333133313233133222   >>