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

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

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