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

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

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