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

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

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