D121213233313131333132333131313132313233313223313113313232111121   >>    D12121323331313133313233313131313231323331322331311331323211112   <<    D121213233313131333132333131313132313233313223313113313232111123   >>      D121213233313131333132333131313132313233313223313113313232111122   >>