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

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

*GRAMMAR*
wif -> PINK 
 dax -> RED 
 kiki -> GREEN 
 gazzer -> YELLOW 
 u1 tufa -> [u1] [u1] 
 x1 blicket x2 -> [x1] [x2] 
 u1 fep x1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 