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

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

*GRAMMAR*
fep -> YELLOW 
 lug -> GREEN 
 wif -> RED 
 zup -> PINK 
 u1 gazzer u2 -> [u2] [u1] [u2] 
 x1 tufa -> [x1] [x1] 
 x1 dax x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 