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

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

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