B3311331313231311331322331333132313331322331323133313113313132321121   >>    B331133131323131133132233133313231333132233132313331311331313232112   <<    B3311331313231311331322331333132313331322331323133313113313132321123   >>      B3311331313231311331322331333132313331322331323133313113313132321122   >>