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

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

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