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

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

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