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

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

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