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

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

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