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

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

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