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

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

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