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

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

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