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

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

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