C1111233131211111211113313331333133313311211111133133313331333133313221322211   >>    C111123313121111121111331333133313331331121111113313331333133313331322132221   <<    C1111233131211111211113313331333133313311211111133133313331333133313221322213   >>      C1111233131211111211113313331333133313311211111133133313331333133313221322212   >>