*SUPPORT*
IN: fep fep dax gazzer tufa gazzer OUT: YELLOW GREEN YELLOW GREEN GREEN GREEN
IN: zup fep fep dax blicket tufa gazzer OUT: RED YELLOW BLUE YELLOW BLUE BLUE GREEN
IN: blicket dax fep OUT: YELLOW BLUE YELLOW YELLOW
IN: gazzer wif fep tufa zup tufa fep OUT: YELLOW RED YELLOW YELLOW RED YELLOW GREEN
IN: gazzer dax zup OUT: RED GREEN RED RED
IN: zup dax fep OUT: YELLOW RED YELLOW YELLOW
IN: zup OUT: RED
IN: zup fep OUT: RED YELLOW
IN: blicket tufa fep OUT: BLUE YELLOW
IN: fep zup blicket dax zup OUT: YELLOW RED RED BLUE RED RED
IN: gazzer dax blicket OUT: BLUE GREEN BLUE BLUE
IN: fep tufa gazzer OUT: YELLOW GREEN
IN: blicket OUT: BLUE
IN: fep blicket dax blicket tufa gazzer tufa gazzer OUT: YELLOW BLUE BLUE BLUE BLUE GREEN GREEN

*QUERY*
IN: fep dax zup OUT: RED YELLOW RED RED
IN: fep gazzer OUT: YELLOW GREEN
IN: zup zup tufa fep OUT: RED RED YELLOW
IN: fep OUT: YELLOW
IN: zup dax gazzer OUT: GREEN RED GREEN GREEN
IN: zup dax zup tufa fep OUT: RED RED RED RED YELLOW
IN: zup dax zup tufa blicket OUT: RED RED RED RED BLUE
IN: fep blicket dax blicket OUT: YELLOW BLUE BLUE BLUE BLUE
IN: fep dax fep OUT: YELLOW YELLOW YELLOW YELLOW
IN: blicket dax gazzer OUT: GREEN BLUE GREEN GREEN

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