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

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

*GRAMMAR*
fep -> BLUE 
 dax -> GREEN 
 lug -> PURPLE 
 kiki -> YELLOW 
 u1 wif u2 -> [u2] [u1] [u1] 
 u1 zup -> [u1] [u1] [u1] 
 x1 tufa x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 