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

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

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