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

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

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