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

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

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