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

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

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