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

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

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