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

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

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