B3311331313231311331322331333132322331323231333133313231323132312312331   >>    B331133131323131133132233133313232233132323133313331323132313231231233   <<    B3311331313231311331322331333132322331323231333133313231323132312312333   >>      B3311331313231311331322331333132322331323231333133313231323132312312332   >>