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

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

*GRAMMAR*
zup -> YELLOW 
 wif -> GREEN 
 dax -> BLUE 
 gazzer -> PURPLE 
 x1 tufa x2 -> [x1] [x2] 
 x1 kiki -> [x1] [x1] 
 u1 lug -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 