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

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

*GRAMMAR*
tufa -> PINK 
 wif -> YELLOW 
 kiki -> GREEN 
 dax -> BLUE 
 u1 fep -> [u1] [u1] 
 u1 zup u2 -> [u1] [u2] 
 x1 blicket x2 -> [x1] [x2] [x2] 
 u1 x1 -> [u1] [x1] 
 