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

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

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