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

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

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