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

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

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