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

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

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