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

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

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