D1313331322132333132333132312312323331323223313113313233231323221211   >>    D131333132213233313233313231231232333132322331311331323323132322121   <<    D1313331322132333132333132312312323331323223313113313233231323221213   >>      D1313331322132333132333132312312323331323223313113313233231323221212   >>