B3311331313231311331322331333132313331322331323133313232212111112312311   >>    B331133131323131133132233133313231333132233132313331323221211111231231   <<    B3311331313231311331322331333132313331322331323133313232212111112312313   >>      B3311331313231311331322331333132313331322331323133313232212111112312312   >>