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

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

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