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

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

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