B33113313132313113313223313331323133313223313231333133112312331312121   >>    B3311331313231311331322331333132313331322331323133313311231233131212   <<    B33113313132313113313223313331323133313223313231333133112312331312123   >>      B33113313132313113313223313331323133313223313231333133112312331312122   >>