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

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

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