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

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

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