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

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

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