*SUPPORT*
IN: wif lug wif dax tufa OUT: PINK GREEN PINK PINK PINK GREEN PINK PINK
IN: zup OUT: BLUE
IN: wif dax OUT: PINK PINK
IN: zup blicket kiki OUT: RED RED BLUE
IN: zup dax OUT: BLUE BLUE
IN: kiki blicket zup OUT: BLUE BLUE RED
IN: kiki wif dax OUT: RED PINK PINK
IN: lug kiki dax tufa OUT: GREEN RED RED GREEN RED RED
IN: wif dax tufa OUT: PINK PINK PINK PINK
IN: lug blicket wif OUT: PINK PINK GREEN
IN: lug blicket wif tufa OUT: PINK PINK GREEN PINK PINK GREEN
IN: wif OUT: PINK
IN: wif wif zup tufa OUT: PINK PINK BLUE PINK PINK BLUE
IN: lug wif dax OUT: GREEN PINK PINK

*QUERY*
IN: lug blicket kiki tufa OUT: RED RED GREEN RED RED GREEN
IN: wif blicket kiki OUT: RED RED PINK
IN: wif wif blicket kiki OUT: PINK RED RED PINK
IN: kiki OUT: RED
IN: zup blicket wif OUT: PINK PINK BLUE
IN: kiki lug blicket zup OUT: RED BLUE BLUE GREEN
IN: lug dax OUT: GREEN GREEN
IN: kiki tufa OUT: RED RED
IN: wif kiki OUT: PINK RED
IN: wif lug tufa OUT: PINK GREEN PINK GREEN

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