C1111233131211111211113313331333133313331333133313331333133313121111332331221   >>    C111123313121111121111331333133313331333133313331333133313331312111133233122   <<    C1111233131211111211113313331333133313331333133313331333133313121111332331223   >>      C1111233131211111211113313331333133313331333133313331333133313121111332331222   >>