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

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

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