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

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

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