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

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

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