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

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

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