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

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

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