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

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

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