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

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

*GRAMMAR*
tufa -> PINK 
 dax -> BLUE 
 fep -> GREEN 
 lug -> YELLOW 
 u1 blicket x1 -> [u1] [x1] 
 x1 zup x2 -> [x2] [x2] [x1] [x2] 
 x1 wif x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 