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

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

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