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

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

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