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

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

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