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

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

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