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

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

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