B3311331313231311331322331333131133132322131333132313231333132313232233131211   >>    B331133131323131133132233133313113313232213133313231323133313231323223313121   <<    B3311331313231311331322331333131133132322131333132313231333132313232233131213   >>      B3311331313231311331322331333131133132322131333132313231333132313232233131212   >>