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

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

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