*SUPPORT*
IN: lug lug wif lug zup fep OUT: YELLOW YELLOW PINK YELLOW YELLOW PINK
IN: fep OUT: PINK
IN: fep zup dax OUT: PINK GREEN
IN: kiki zup fep OUT: BLUE PINK
IN: kiki wif dax lug zup dax OUT: GREEN YELLOW GREEN BLUE GREEN YELLOW GREEN
IN: lug OUT: YELLOW
IN: dax OUT: GREEN
IN: fep zup lug OUT: PINK YELLOW
IN: fep zup kiki OUT: PINK BLUE
IN: lug gazzer lug OUT: YELLOW YELLOW YELLOW
IN: kiki kiki zup lug OUT: BLUE BLUE YELLOW
IN: dax zup lug OUT: GREEN YELLOW
IN: kiki wif kiki zup dax OUT: BLUE GREEN BLUE BLUE GREEN
IN: kiki fep zup lug OUT: BLUE PINK YELLOW

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

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