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

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

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