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

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

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