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

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

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