¹  ,               ²                ³           ⁴               ⁵                      ⁶                ⁷                ⁸               ,     ⁹                          ¹⁰               ¹¹             ¹²               ¹³             ¹⁴           ,    ¹⁵                 ¹⁶               ¹⁷       ,    ¹⁸             ¹⁹                        ²⁰               ²¹                    ²²          ²³     ,    ²⁴             ²⁵               ²⁶             ²⁷                      ²⁸                       