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

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

*GRAMMAR*
wif -> RED 
 zup -> GREEN 
 gazzer -> YELLOW 
 lug -> PURPLE 
 u1 dax u2 -> [u1] [u2] 
 u1 fep -> [u1] [u1] 
 x1 tufa x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 