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

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

*GRAMMAR*
zup -> BLUE 
 dax -> RED 
 wif -> YELLOW 
 fep -> GREEN 
 u1 lug u2 -> [u1] [u2] 
 x1 gazzer x2 -> [x2] [x1] 
 x1 blicket -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 