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

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

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