D33132221323131133131323132321233131323223313223313133313221311   >>    D3313222132313113313132313232123313132322331322331313331322131   <<    D33132221323131133131323132321233131323223313223313133313221313   >>      D33132221323131133131323132321233131323223313223313133313221312   >>