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

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

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