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

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

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