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

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

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