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

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

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