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

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

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