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

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

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