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

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

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