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

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

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