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

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

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