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

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

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