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

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

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