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

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

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