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

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

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