B331133131323131133132233133313233313331313223313233313231311311   >>    B33113313132313113313223313331323331333131322331323331323131131   <<    B331133131323131133132233133313233313331313223313233313231311313   >>      B331133131323131133132233133313233313331313223313233313231311312   >>