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

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

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