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

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

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