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

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

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