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

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

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