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

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

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