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

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

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