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

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

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