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

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

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