D1313331322132333132333132312312323331323223313113313233313231333132232221   >>    D131333132213233313233313231231232333132322331311331323331323133313223222   <<    D1313331322132333132333132312312323331323223313113313233313231333132232223   >>      D1313331322132333132333132312312323331323223313113313233313231333132232222   >>