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

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

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