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

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

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