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

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

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