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

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

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