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

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

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