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

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

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