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

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

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