B33113313132313113313223313331323131323133313232233131133221211   >>    B3311331313231311331322331333132313132313331323223313113322121   <<    B33113313132313113313223313331323131323133313232233131133221213   >>      B33113313132313113313223313331323131323133313232233131133221212   >>