B3311331313231311331322331333132313231333131323223313113313231323221231121   >>    B331133131323131133132233133313231323133313132322331311331323132322123112   <<    B3311331313231311331322331333132313231333131323223313113313231323221231123   >>      B3311331313231311331322331333132313231333131323223313113313231323221231122   >>