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

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

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