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

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

*GRAMMAR*
lug -> GREEN 
 wif -> PURPLE 
 tufa -> YELLOW 
 dax -> BLUE 
 u1 fep -> [u1] [u1] [u1] 
 u1 gazzer u2 -> [u2] [u1] 
 x1 blicket x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 