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

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

*GRAMMAR*
zup -> GREEN 
 dax -> PURPLE 
 tufa -> BLUE 
 wif -> YELLOW 
 x1 blicket x2 -> [x2] [x1] [x1] 
 x1 fep -> [x1] [x1] 
 u1 gazzer u2 -> [u1] [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 