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

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

*GRAMMAR*
blicket -> YELLOW 
 wif -> GREEN 
 dax -> BLUE 
 lug -> RED 
 u1 tufa u2 -> [u2] [u1] 
 x1 kiki x2 -> [x1] [x2] 
 x1 fep -> [x1] [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 