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

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

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