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

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

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