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

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

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