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

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

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