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

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

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