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

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

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