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

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

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