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

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

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