Forced expulsions, violent recriminations, mass exodus, peaceful co-existence - just some of the possible outcomes for hundreds of thousands of Southern Sudanese living in the North, and to a lesser extent, vice versa, after a January referendum when the South is likely to vote to transform its semi-autonomy into full independence. 'We are worried for the future, of what happens after the referendum,' said James Jok, a vegetable seller who has lived in the Northern capital Khartoum since fleeing violence in the Southern state of Jonglei over two decades ago. 'I am frightened that if there is independence, we will just be told, "go home",' he added.