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

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

*GRAMMAR*
kiki -> BLUE 
 tufa -> GREEN 
 dax -> PURPLE 
 wif -> RED 
 u1 lug -> [u1] [u1] 
 u1 zup -> [u1] [u1] [u1] 
 u1 blicket u2 -> [u1] [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 