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

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

*GRAMMAR*
zup -> RED 
 dax -> PINK 
 wif -> YELLOW 
 tufa -> BLUE 
 u1 fep u2 -> [u1] [u2] 
 u1 gazzer u2 -> [u1] [u2] 
 x1 kiki x2 -> [x2] [x2] [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 