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

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

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