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

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

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