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

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

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