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

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

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