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

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

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