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

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

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