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

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

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