B3311331313231311331322331333132313331323223312113313331333133313221313331   >>    B331133131323131133132233133313231333132322331211331333133313331322131333   <<    B3311331313231311331322331333132313331323223312113313331333133313221313333   >>      B3311331313231311331322331333132313331323223312113313331333133313221313332   >>