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

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

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