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

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

*GRAMMAR*
gazzer -> RED 
 kiki -> GREEN 
 zup -> YELLOW 
 wif -> BLUE 
 u1 blicket -> [u1] [u1] [u1] 
 x1 tufa x2 -> [x2] [x1] 
 x1 dax -> [x1] [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 