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

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

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