[1DD]↺↻
[1DG]↺↻
[1DJ]↺↻
[1DM]↺↻
[1DR]↺↻
[1DT]↺↻
[1DW]↺↻
[1DZ]↺↻
[1F1]↺↻
[1F4]↺↻
[1F7]↺↻
[1F9]↺↻
See also the exercises [18T]↺↻ and [18W]↺↻ on the relationship between convexity and properties of derivatives.