blue + blue -> blue
blue + red -> yellow
blue + yellow -> red
red + blue -> yellow
red + red -> red
red + yellow -> blue
yellow + blue -> red
yellow + red -> blue
yellow + yellow -> yellow

 blue red yellow
NNN zero
NNN zero
NNN zero
 one two zero zero

 blue red yellow red yellow blue red yellow red blue
NNN zero
NNN zero
NNN zero
NNN zero
NNN zero
NNN zero
NNN zero
NNN zero
NNN zero
NNN zero
 one two zero zero

