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

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

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