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

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

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