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

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

*GRAMMAR*
lug -> YELLOW 
 zup -> GREEN 
 wif -> RED 
 fep -> PURPLE 
 u1 dax -> [u1] [u1] 
 x1 gazzer x2 -> [x1] [x2] 
 u1 tufa -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 