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

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

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