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

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

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