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

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

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