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

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

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