*SUPPORT*
IN: dax fep dax OUT: RED GREEN RED
IN: dax dax wif OUT: RED RED RED
IN: zup tufa OUT: PURPLE PURPLE PURPLE PURPLE PURPLE
IN: zup OUT: PURPLE
IN: fep lug zup OUT: PURPLE GREEN
IN: fep lug fep OUT: GREEN GREEN
IN: blicket blicket dax wif OUT: YELLOW YELLOW RED RED
IN: dax tufa OUT: RED RED RED RED RED
IN: fep lug blicket OUT: YELLOW GREEN
IN: fep OUT: GREEN
IN: fep fep tufa OUT: GREEN GREEN GREEN GREEN GREEN GREEN
IN: blicket lug zup OUT: PURPLE YELLOW
IN: dax wif OUT: RED RED
IN: zup wif OUT: PURPLE PURPLE

*QUERY*
IN: blicket lug dax OUT: RED YELLOW
IN: blicket wif OUT: YELLOW YELLOW
IN: fep wif OUT: GREEN GREEN
IN: zup zup lug fep OUT: PURPLE GREEN PURPLE
IN: blicket blicket fep tufa OUT: YELLOW YELLOW GREEN GREEN GREEN GREEN GREEN
IN: fep fep wif OUT: GREEN GREEN GREEN
IN: zup lug fep OUT: GREEN PURPLE
IN: fep tufa OUT: GREEN GREEN GREEN GREEN GREEN
IN: blicket tufa OUT: YELLOW YELLOW YELLOW YELLOW YELLOW
IN: blicket OUT: YELLOW

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