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

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

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