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

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

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