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

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

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