*SUPPORT*
IN: wif fep gazzer blicket OUT: GREEN RED PURPLE
IN: fep gazzer dax OUT: RED BLUE
IN: fep kiki OUT: RED RED
IN: blicket zup wif gazzer dax OUT: GREEN PURPLE BLUE
IN: wif gazzer blicket kiki gazzer wif OUT: GREEN PURPLE GREEN PURPLE GREEN
IN: wif zup fep kiki gazzer dax OUT: RED GREEN RED GREEN BLUE
IN: blicket zup wif OUT: GREEN PURPLE
IN: dax zup fep gazzer wif gazzer fep OUT: RED BLUE GREEN RED
IN: dax blicket zup wif OUT: BLUE GREEN PURPLE
IN: dax kiki kiki OUT: BLUE BLUE BLUE BLUE
IN: blicket zup blicket OUT: PURPLE PURPLE
IN: wif zup dax gazzer fep OUT: BLUE GREEN RED
IN: dax zup wif kiki OUT: GREEN BLUE GREEN BLUE
IN: dax wif zup dax gazzer wif OUT: BLUE BLUE GREEN GREEN

*QUERY*
IN: fep OUT: RED
IN: wif zup wif kiki OUT: GREEN GREEN GREEN GREEN
IN: wif zup fep OUT: RED GREEN
IN: fep zup wif OUT: GREEN RED
IN: blicket dax blicket zup fep OUT: PURPLE BLUE RED PURPLE
IN: dax fep OUT: BLUE RED
IN: dax zup dax OUT: BLUE BLUE
IN: wif OUT: GREEN
IN: blicket OUT: PURPLE
IN: dax fep zup wif OUT: BLUE GREEN RED

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