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

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

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