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

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

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