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

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

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