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

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

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