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

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

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