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

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

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