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

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

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