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

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

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