*SUPPORT*
IN: zup OUT: RED
IN: dax dax zup OUT: PINK PINK RED
IN: tufa dax dax OUT: GREEN PINK PINK
IN: dax OUT: PINK
IN: tufa dax kiki OUT: GREEN PINK PINK
IN: fep tufa kiki OUT: BLUE GREEN GREEN
IN: tufa wif fep kiki lug OUT: BLUE BLUE BLUE BLUE GREEN
IN: fep kiki OUT: BLUE BLUE
IN: fep lug OUT: BLUE BLUE
IN: fep zup wif zup OUT: RED BLUE RED
IN: dax kiki OUT: PINK PINK
IN: tufa lug lug OUT: GREEN GREEN GREEN GREEN
IN: tufa lug OUT: GREEN GREEN
IN: dax fep zup fep fep kiki OUT: PINK BLUE RED BLUE BLUE BLUE

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

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