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

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

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