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

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

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