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

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

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