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

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

*GRAMMAR*
fep -> YELLOW 
 tufa -> RED 
 dax -> GREEN 
 zup -> PURPLE 
 x1 wif x2 -> [x1] [x2] 
 u1 blicket x1 -> [u1] [x1] 
 u1 gazzer u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 