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

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

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