*SUPPORT*
IN: wif zup zup kiki OUT: RED GREEN GREEN RED GREEN GREEN
IN: dax fep wif lug OUT: RED YELLOW RED YELLOW RED YELLOW RED YELLOW
IN: dax fep dax OUT: YELLOW YELLOW
IN: dax kiki OUT: YELLOW YELLOW
IN: dax OUT: YELLOW
IN: zup fep blicket OUT: PINK GREEN
IN: wif dax fep dax kiki OUT: RED YELLOW YELLOW RED YELLOW YELLOW
IN: blicket OUT: PINK
IN: wif wif fep dax OUT: RED YELLOW RED
IN: blicket dax fep zup OUT: PINK GREEN YELLOW
IN: dax zup fep wif OUT: YELLOW RED GREEN
IN: zup OUT: GREEN
IN: wif fep wif lug OUT: RED RED RED RED RED RED RED RED
IN: wif fep dax kiki OUT: YELLOW RED YELLOW RED

*QUERY*
IN: blicket wif OUT: PINK RED
IN: blicket wif lug OUT: PINK RED PINK RED PINK RED PINK RED
IN: wif fep dax OUT: YELLOW RED
IN: wif wif OUT: RED RED
IN: zup blicket OUT: GREEN PINK
IN: blicket fep blicket lug OUT: PINK PINK PINK PINK PINK PINK PINK PINK
IN: blicket fep zup OUT: GREEN PINK
IN: wif OUT: RED
IN: zup zup fep dax OUT: GREEN YELLOW GREEN
IN: dax wif fep dax OUT: YELLOW YELLOW RED

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