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

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

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