B3311331313231311331322331333132313331323223312113313331333133313132213111   >>    B331133131323131133132233133313231333132322331211331333133313331313221311   <<    B3311331313231311331322331333132313331323223312113313331333133313132213113   >>      B3311331313231311331322331333132313331323223312113313331333133313132213112   >>