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

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

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