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

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

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