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

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

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