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

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

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