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

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

*GRAMMAR*
tufa -> GREEN 
 lug -> RED 
 wif -> YELLOW 
 fep -> BLUE 
 x1 gazzer x2 -> [x1] [x2] 
 x1 dax -> [x1] [x1] 
 x1 kiki -> [x1] [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 