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

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

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