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

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

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