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

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

*GRAMMAR*
dax -> PURPLE 
 zup -> GREEN 
 wif -> YELLOW 
 lug -> BLUE 
 x1 fep x2 -> [x1] [x2] [x1] 
 u1 gazzer u2 -> [u1] [u2] [u1] [u2] [u1] [u2] [u2] 
 x1 tufa -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 