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

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

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