B3311331313231311331322331333132313232233132322223313231323132313331231   >>    B331133131323131133132233133313231323223313232222331323132313231333123   <<    B3311331313231311331322331333132313232233132322223313231323132313331233   >>      B3311331313231311331322331333132313232233132322223313231323132313331232   >>