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

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

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