*SUPPORT*
IN: blicket zup OUT: GREEN GREEN GREEN GREEN
IN: tufa tufa gazzer dax OUT: BLUE BLUE RED RED
IN: tufa zup OUT: RED RED RED RED
IN: fep tufa OUT: PURPLE RED
IN: fep gazzer fep OUT: PURPLE PURPLE PURPLE
IN: dax OUT: BLUE
IN: fep gazzer tufa gazzer tufa OUT: RED RED RED RED PURPLE
IN: dax zup OUT: BLUE BLUE BLUE BLUE
IN: fep OUT: PURPLE
IN: tufa dax OUT: RED BLUE
IN: blicket tufa gazzer dax gazzer tufa OUT: RED RED BLUE BLUE GREEN RED
IN: blicket gazzer blicket OUT: GREEN GREEN GREEN
IN: fep tufa zup OUT: PURPLE RED PURPLE RED PURPLE RED PURPLE RED
IN: tufa tufa gazzer blicket gazzer dax OUT: BLUE BLUE GREEN GREEN RED RED

*QUERY*
IN: dax wif dax OUT: BLUE BLUE BLUE
IN: blicket OUT: GREEN
IN: tufa gazzer fep OUT: PURPLE PURPLE RED
IN: fep wif dax dax OUT: PURPLE BLUE BLUE PURPLE
IN: tufa OUT: RED
IN: tufa zup gazzer fep OUT: PURPLE PURPLE RED RED RED RED
IN: blicket tufa gazzer tufa OUT: RED RED GREEN RED
IN: dax zup gazzer fep OUT: PURPLE PURPLE BLUE BLUE BLUE BLUE
IN: dax gazzer blicket OUT: GREEN GREEN BLUE
IN: fep dax OUT: PURPLE BLUE

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