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

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

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