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

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

*GRAMMAR*
zup -> YELLOW 
 wif -> RED 
 kiki -> GREEN 
 tufa -> PURPLE 
 u1 fep x1 -> [x1] [u1] 
 x1 gazzer x2 -> [x1] [x2] 
 u1 dax u2 -> [u2] [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 