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

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

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