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

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

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