color  shape    size    #blue   circle   small  60blue   circle   medium 30blue   circle   large  10blue   square   small  20blue   square   medium 10blue   square   large  10blue   triangle small  10blue   triangle medium 20blue   triangle large  30red    circle   small  70red    circle   medium 40red    circle   large  10red    square   small  10red    square   medium 10red    square   large  10red    triangle small  10red    triangle medium 70red    triangle large  50yellow circle   small  10yellow circle   medium 10yellow circle   large  10yellow square   small  30yellow square   medium 60yellow square   large  10yellow triangle small  10yellow triangle medium 10yellow triangle large  10green  circle   small  10green  circle   medium 10green  circle   large  10green  square   small  30green  square   medium 50green  square   large  10green  triangle small  10green  triangle medium 60green  triangle large  50blue   ?        medium 10blue   circle   ?      20blue   square   ?      10blue   triangle ?      10red    circle   ?      20red    triangle ?      10yellow circle   ?      10yellow square   ?      10green  square   ?      10green  triangle ?      10