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

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

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