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

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

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