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

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

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