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

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

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