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

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

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