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

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

*GRAMMAR*
tufa -> GREEN 
 wif -> RED 
 gazzer -> YELLOW 
 lug -> BLUE 
 u1 dax x1 -> [x1] [x1] [u1] 
 x1 fep x2 -> [x1] [x1] [x1] [x2] [x1] [x1] 
 x1 zup -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 