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

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

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