*SUPPORT*
IN: wif zup wif fep wif OUT: BLUE BLUE PURPLE BLUE
IN: wif OUT: BLUE
IN: zup kiki blicket OUT: PURPLE GREEN PURPLE
IN: wif kiki wif OUT: BLUE BLUE BLUE
IN: wif kiki blicket OUT: BLUE GREEN BLUE
IN: zup kiki wif OUT: PURPLE BLUE PURPLE
IN: blicket fep gazzer OUT: RED GREEN
IN: gazzer dax OUT: RED RED
IN: blicket blicket zup gazzer fep zup fep gazzer OUT: RED PURPLE GREEN GREEN PURPLE RED
IN: wif wif kiki zup OUT: BLUE BLUE PURPLE BLUE
IN: wif kiki wif fep zup OUT: PURPLE BLUE BLUE BLUE
IN: gazzer gazzer dax OUT: RED RED RED RED
IN: blicket kiki blicket OUT: GREEN GREEN GREEN
IN: wif zup kiki blicket OUT: BLUE PURPLE GREEN PURPLE

*QUERY*
IN: zup dax dax OUT: PURPLE PURPLE PURPLE PURPLE
IN: zup kiki gazzer OUT: PURPLE RED PURPLE
IN: gazzer OUT: RED
IN: blicket OUT: GREEN
IN: blicket kiki blicket dax OUT: GREEN GREEN GREEN GREEN GREEN GREEN
IN: zup dax fep zup dax OUT: PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE
IN: zup OUT: PURPLE
IN: gazzer kiki blicket OUT: RED GREEN RED
IN: zup fep blicket OUT: GREEN PURPLE
IN: wif kiki gazzer OUT: BLUE RED BLUE

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