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

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

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