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

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

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