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

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

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