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

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

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