*SUPPORT*
IN: gazzer lug gazzer OUT: RED RED
IN: zup OUT: GREEN
IN: zup fep dax OUT: GREEN YELLOW GREEN YELLOW
IN: gazzer lug zup OUT: RED GREEN
IN: wif fep lug wif dax OUT: PURPLE YELLOW PURPLE PURPLE YELLOW PURPLE
IN: gazzer wif lug wif OUT: RED PURPLE PURPLE
IN: wif lug wif OUT: PURPLE PURPLE
IN: fep OUT: YELLOW
IN: gazzer tufa dax OUT: RED RED RED RED
IN: gazzer OUT: RED
IN: gazzer lug wif OUT: RED PURPLE
IN: zup tufa OUT: GREEN GREEN
IN: wif fep tufa dax OUT: PURPLE YELLOW YELLOW PURPLE YELLOW YELLOW
IN: gazzer lug fep OUT: RED YELLOW

*QUERY*
IN: zup lug wif dax OUT: GREEN PURPLE GREEN PURPLE
IN: wif lug zup OUT: PURPLE GREEN
IN: wif zup tufa OUT: PURPLE GREEN GREEN
IN: zup lug zup OUT: GREEN GREEN
IN: gazzer tufa OUT: RED RED
IN: fep lug gazzer OUT: YELLOW RED
IN: fep tufa OUT: YELLOW YELLOW
IN: fep lug zup OUT: YELLOW GREEN
IN: wif OUT: PURPLE
IN: wif tufa OUT: PURPLE PURPLE

*GRAMMAR*
gazzer -> RED 
 zup -> GREEN 
 fep -> YELLOW 
 wif -> PURPLE 
 x1 dax -> [x1] [x1] 
 u1 tufa -> [u1] [u1] 
 u1 lug u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 