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

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

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