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

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

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