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

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

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