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

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

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