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

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

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