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

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

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