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

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

*GRAMMAR*
wif -> YELLOW 
 gazzer -> GREEN 
 tufa -> PURPLE 
 dax -> BLUE 
 u1 lug x1 -> [x1] [u1] 
 x1 kiki x2 -> [x1] [x2] [x1] 
 u1 zup u2 -> [u1] [u1] [u2] [u2] 
 u1 x1 -> [u1] [x1] 
 