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

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

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