*SUPPORT*
IN: zup blicket zup OUT: YELLOW YELLOW
IN: kiki lug OUT: BLUE BLUE
IN: zup OUT: YELLOW
IN: kiki tufa OUT: BLUE BLUE
IN: fep blicket kiki OUT: BLUE PINK
IN: wif kiki tufa OUT: PURPLE BLUE BLUE
IN: wif blicket kiki OUT: BLUE PURPLE
IN: kiki blicket zup OUT: YELLOW BLUE
IN: zup tufa OUT: YELLOW YELLOW
IN: wif kiki blicket zup OUT: PURPLE YELLOW BLUE
IN: wif OUT: PURPLE
IN: kiki blicket wif OUT: PURPLE BLUE
IN: wif lug OUT: PURPLE PURPLE
IN: fep zup lug OUT: PINK YELLOW YELLOW

*QUERY*
IN: wif tufa OUT: PURPLE PURPLE
IN: wif kiki OUT: PURPLE BLUE
IN: zup zup wif OUT: YELLOW YELLOW PURPLE
IN: fep OUT: PINK
IN: kiki OUT: BLUE
IN: kiki blicket kiki OUT: BLUE BLUE
IN: wif fep lug OUT: PURPLE PINK PINK
IN: fep lug OUT: PINK PINK
IN: wif wif tufa OUT: PURPLE PURPLE PURPLE
IN: zup lug OUT: YELLOW YELLOW

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