B3311331313231311331322331333132313331322331323133313331323312323232311   >>    B331133131323131133132233133313231333132233132313331333132331232323231   <<    B3311331313231311331322331333132313331322331323133313331323312323232313   >>      B3311331313231311331322331333132313331322331323133313331323312323232312   >>