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

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

*GRAMMAR*
wif -> BLUE 
 dax -> YELLOW 
 zup -> RED 
 blicket -> PURPLE 
 x1 tufa x2 -> [x1] [x2] 
 u1 gazzer u2 -> [u2] [u2] [u1] [u1] 
 u1 kiki u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 