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

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

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