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

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

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