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

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

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