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

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

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