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

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

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