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

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

*GRAMMAR*
wif -> YELLOW 
 dax -> PURPLE 
 tufa -> GREEN 
 fep -> BLUE 
 x1 kiki -> [x1] [x1] [x1] 
 x1 lug x2 -> [x1] [x2] [x1] [x2] 
 u1 zup u2 -> [u2] [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 