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

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

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