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

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

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