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

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

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