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

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

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