B3311331313231311331322331333132233131133132233133313231333132321123231312231   >>    B331133131323131133132233133313223313113313223313331323133313232112323131223   <<    B3311331313231311331322331333132233131133132233133313231333132321123231312233   >>      B3311331313231311331322331333132233131133132233133313231333132321123231312232   >>