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

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

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