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

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

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