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

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

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