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

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

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