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

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

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