*SUPPORT*
IN: dax OUT: YELLOW
IN: zup OUT: GREEN
IN: gazzer OUT: PURPLE
IN: dax fep gazzer OUT: YELLOW PURPLE
IN: wif fep wif OUT: PINK PINK
IN: wif tufa zup OUT: GREEN PINK
IN: dax wif zup gazzer OUT: YELLOW PINK GREEN PURPLE
IN: dax zup fep wif OUT: YELLOW GREEN PINK
IN: zup tufa gazzer OUT: PURPLE GREEN
IN: gazzer lug dax OUT: YELLOW PURPLE
IN: zup tufa zup OUT: GREEN GREEN
IN: zup wif OUT: GREEN PINK
IN: zup wif wif OUT: GREEN PINK PINK
IN: wif fep gazzer OUT: PINK PURPLE

*QUERY*
IN: wif tufa dax OUT: YELLOW PINK
IN: zup gazzer fep gazzer OUT: GREEN PURPLE PURPLE
IN: dax fep dax OUT: YELLOW YELLOW
IN: dax lug dax OUT: YELLOW YELLOW
IN: zup zup dax OUT: GREEN GREEN YELLOW
IN: wif gazzer fep dax OUT: PINK PURPLE YELLOW
IN: gazzer dax fep gazzer OUT: PURPLE YELLOW PURPLE
IN: dax lug wif OUT: PINK YELLOW
IN: zup tufa wif OUT: PINK GREEN
IN: wif gazzer tufa wif OUT: PINK PINK PURPLE

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