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

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

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