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

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

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