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

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

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