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

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

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