*SUPPORT*
IN: dax zup kiki dax OUT: RED RED RED RED
IN: tufa tufa OUT: BLUE BLUE
IN: dax kiki tufa OUT: BLUE RED BLUE
IN: blicket zup OUT: PURPLE PURPLE
IN: blicket zup kiki blicket tufa OUT: PURPLE BLUE PURPLE PURPLE PURPLE BLUE
IN: wif gazzer blicket OUT: GREEN PURPLE PURPLE GREEN
IN: tufa OUT: BLUE
IN: wif tufa tufa dax OUT: GREEN BLUE BLUE RED
IN: blicket OUT: PURPLE
IN: wif gazzer tufa OUT: GREEN BLUE BLUE GREEN
IN: dax gazzer blicket zup OUT: RED PURPLE PURPLE PURPLE PURPLE RED
IN: wif zup kiki tufa zup OUT: BLUE BLUE GREEN GREEN BLUE BLUE
IN: dax zup OUT: RED RED
IN: tufa dax OUT: BLUE RED

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

*GRAMMAR*
wif -> GREEN 
 tufa -> BLUE 
 dax -> RED 
 blicket -> PURPLE 
 u1 zup -> [u1] [u1] 
 x1 kiki x2 -> [x2] [x1] [x2] 
 u1 gazzer x1 -> [u1] [x1] [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 