*SUPPORT*
IN: zup wif lug fep tufa OUT: BLUE BLUE GREEN PINK
IN: tufa blicket fep zup fep blicket OUT: PINK PURPLE BLUE PURPLE
IN: zup lug dax lug OUT: GREEN BLUE GREEN
IN: blicket wif blicket fep lug OUT: PURPLE PURPLE PURPLE GREEN
IN: tufa wif lug OUT: PINK PINK GREEN
IN: zup zup OUT: BLUE BLUE
IN: tufa dax blicket OUT: PURPLE PINK
IN: lug fep zup OUT: GREEN BLUE
IN: lug tufa fep lug OUT: GREEN PINK GREEN
IN: blicket OUT: PURPLE
IN: tufa OUT: PINK
IN: lug fep tufa OUT: GREEN PINK
IN: lug zup OUT: GREEN BLUE
IN: tufa tufa fep tufa OUT: PINK PINK PINK

*QUERY*
IN: zup dax lug OUT: GREEN BLUE
IN: tufa dax blicket dax tufa wif lug OUT: PINK PURPLE PINK PINK PURPLE PINK GREEN
IN: lug wif blicket blicket OUT: GREEN GREEN PURPLE PURPLE
IN: blicket zup fep zup OUT: PURPLE BLUE BLUE
IN: lug lug OUT: GREEN GREEN
IN: blicket lug zup fep zup OUT: PURPLE GREEN BLUE BLUE
IN: blicket dax lug fep tufa OUT: GREEN PURPLE PINK
IN: zup OUT: BLUE
IN: zup wif zup fep tufa fep blicket OUT: BLUE BLUE BLUE PINK PURPLE
IN: zup wif lug OUT: BLUE BLUE GREEN

*GRAMMAR*
tufa -> PINK 
 zup -> BLUE 
 lug -> GREEN 
 blicket -> PURPLE 
 x1 dax u1 -> [u1] [x1] 
 x1 wif x2 -> [x1] [x1] [x2] 
 x1 fep u1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 