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

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

*GRAMMAR*
dax -> BLUE 
 lug -> GREEN 
 fep -> RED 
 kiki -> YELLOW 
 x1 wif -> [x1] [x1] 
 u1 zup u2 -> [u2] [u1] 
 x1 blicket x2 -> [x2] [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 