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

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

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