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

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

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