B3311331313231311331322331333132313331322331323133313331333231333133321123311   >>    B331133131323131133132233133313231333132233132313331333133323133313332112331   <<    B3311331313231311331322331333132313331322331323133313331333231333133321123313   >>      B3311331313231311331322331333132313331322331323133313331333231333133321123312   >>