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

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

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