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

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

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