B3311331313231311331322331333132313232233131311331333132313231231   >>    B331133131323131133132233133313231323223313131133133313231323123   <<    B3311331313231311331322331333132313232233131311331333132313231233   >>      B3311331313231311331322331333132313232233131311331333132313231232   >>