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

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

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