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

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

*GRAMMAR*
fep -> BLUE 
 wif -> GREEN 
 gazzer -> PURPLE 
 zup -> RED 
 x1 tufa u1 -> [u1] [x1] 
 u1 dax -> [u1] [u1] 
 u1 kiki u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 