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

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

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