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

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

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