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

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

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