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

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

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