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

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

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