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

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

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