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

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

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