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

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

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