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

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

*GRAMMAR*
blicket -> YELLOW 
 wif -> BLUE 
 dax -> GREEN 
 gazzer -> RED 
 u1 fep u2 -> [u2] [u1] 
 x1 tufa -> [x1] [x1] 
 x1 zup x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 