*SUPPORT*
IN: wif fep wif blicket dax OUT: BLUE BLUE GREEN
IN: gazzer kiki OUT: RED RED RED
IN: tufa OUT: PURPLE
IN: tufa dax OUT: PURPLE GREEN
IN: tufa blicket gazzer kiki OUT: PURPLE RED PURPLE RED PURPLE RED
IN: tufa fep tufa blicket tufa OUT: PURPLE PURPLE PURPLE
IN: tufa blicket dax OUT: PURPLE GREEN
IN: gazzer blicket wif OUT: RED BLUE
IN: dax blicket gazzer kiki OUT: GREEN RED GREEN RED GREEN RED
IN: wif blicket wif OUT: BLUE BLUE
IN: tufa fep tufa kiki OUT: PURPLE PURPLE PURPLE PURPLE
IN: dax OUT: GREEN
IN: dax gazzer OUT: GREEN RED
IN: tufa kiki OUT: PURPLE PURPLE PURPLE

*QUERY*
IN: wif fep wif blicket tufa kiki OUT: BLUE BLUE PURPLE BLUE PURPLE BLUE PURPLE
IN: wif OUT: BLUE
IN: wif fep wif fep tufa blicket tufa OUT: BLUE BLUE PURPLE PURPLE
IN: wif fep wif fep dax fep wif kiki OUT: BLUE BLUE GREEN BLUE BLUE BLUE
IN: gazzer blicket dax OUT: RED GREEN
IN: gazzer OUT: RED
IN: dax blicket dax kiki OUT: GREEN GREEN GREEN GREEN GREEN GREEN
IN: wif dax gazzer dax fep wif OUT: BLUE GREEN RED GREEN BLUE
IN: tufa gazzer blicket tufa OUT: PURPLE RED PURPLE
IN: dax blicket tufa OUT: GREEN PURPLE

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