B33132212112331323223313211232333132313331322331333133313331312121111123232311   >>    B3313221211233132322331321123233313231333132233133313331333131212111112323231   <<    B33132212112331323223313211232333132313331322331333133313331312121111123232313   >>      B33132212112331323223313211232333132313331322331333133313331312121111123232312   >>