B3311331313231311331322331333132313331322331323133313331323121123123311   >>    B331133131323131133132233133313231333132233132313331333132312112312331   <<    B3311331313231311331322331333132313331322331323133313331323121123123313   >>      B3311331313231311331322331333132313331322331323133313331323121123123312   >>