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

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

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