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

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

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