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

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

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