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

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

*GRAMMAR*
wif -> RED 
 blicket -> BLUE 
 fep -> GREEN 
 dax -> YELLOW 
 x1 lug x2 -> [x1] [x2] [x1] 
 u1 zup u2 -> [u1] [u2] [u2] 
 x1 kiki x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 