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

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

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