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

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

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