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

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

*GRAMMAR*
zup -> YELLOW 
 blicket -> BLUE 
 wif -> RED 
 kiki -> GREEN 
 x1 lug x2 -> [x2] [x1] 
 u1 fep -> [u1] [u1] 
 u1 tufa u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 