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

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

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