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

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

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