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

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

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