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

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

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