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

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

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