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

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

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