257
| Ngwagakete: | Ngwagakete 1 |
|---|---|
| Mengwagakgolo: | Ngwagakgolo 2 – Ngwagakgolo 3 – Ngwagakgolo 4 |
| Mengwagasome: | 220s 230s 240s – 250s – 260s 270s 280s |
| Mengwaga: | 254 255 256 – 257 – 258 259 260 |
257 (CCLVII) ebile ngwaga wa go thoma ka Labone, ngwaga wa boseswai ngwagengsome wa 250s, ngwaga wa bomasomehlano šupa ngwagengkgolo wa Ngwagakgolo 3, le ngwaga wa bomakgolo pedi masomehlano šupa ngwagengkete wa Ngwagakete 1.