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

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

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