*SUPPORT*
IN: dax OUT: PINK
IN: dax tufa lug OUT: PINK BLUE
IN: dax tufa wif OUT: PINK PURPLE
IN: wif lug dax kiki wif OUT: PURPLE BLUE PINK PURPLE
IN: lug tufa gazzer OUT: BLUE RED
IN: lug tufa wif OUT: BLUE PURPLE
IN: wif wif kiki dax OUT: PURPLE PURPLE PINK
IN: lug lug OUT: BLUE BLUE
IN: wif dax gazzer kiki wif zup lug OUT: PURPLE PINK RED PURPLE BLUE
IN: gazzer tufa wif OUT: RED PURPLE
IN: wif kiki gazzer OUT: PURPLE RED
IN: lug tufa lug OUT: BLUE BLUE
IN: gazzer lug zup lug OUT: RED BLUE BLUE
IN: dax lug OUT: PINK BLUE

*QUERY*
IN: wif OUT: PURPLE
IN: dax dax kiki gazzer zup dax OUT: PINK PINK RED PINK
IN: lug kiki lug OUT: BLUE BLUE
IN: lug wif kiki lug OUT: BLUE PURPLE BLUE
IN: dax tufa gazzer OUT: PINK RED
IN: wif kiki lug OUT: PURPLE BLUE
IN: gazzer OUT: RED
IN: gazzer tufa lug OUT: RED BLUE
IN: wif tufa wif OUT: PURPLE PURPLE
IN: gazzer tufa gazzer OUT: RED RED

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