D1212132333131333131323211232313233313232332333131333132313221321   >>    D121213233313133313132321123231323331323233233313133313231322132   <<    D1212132333131333131323211232313233313232332333131333132313221323   >>      D1212132333131333131323211232313233313232332333131333132313221322   >>