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

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

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