B33113313132313113313223313331323133313223313231333133313221311211311312121   >>    B3311331313231311331322331333132313331322331323133313331322131121131131212   <<    B33113313132313113313223313331323133313223313231333133313221311211311312123   >>      B33113313132313113313223313331323133313223313231333133313221311211311312122   >>