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

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

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