B331133131323131133132233133313231323223313233213231333133313221232311   >>    B33113313132313113313223313331323132322331323321323133313331322123231   <<    B331133131323131133132233133313231323223313233213231333133313221232313   >>      B331133131323131133132233133313231323223313233213231333133313221232312   >>