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

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

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