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

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

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