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

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

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