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

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

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