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

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

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