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

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

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