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

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

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