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

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

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