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

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

*GRAMMAR*
lug -> RED 
 dax -> GREEN 
 fep -> YELLOW 
 gazzer -> BLUE 
 u1 blicket -> [u1] [u1] 
 x1 kiki -> [x1] [x1] 
 x1 tufa x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 