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

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

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