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

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

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