| Prefixo conhecido do artigo | Número dos artigos | Prefixo conhecido do artigo | Número dos artigos |
| 2 | 1 | 2 ' | 2 |
| 2 ( | 12 | 2 + | 1 |
| 2 2 | 1 | 2 A | 6 |
| 2 B | 7 | 2 C | 2 |
| 2 E | 2 | 2 F | 1 |
| 2 G | 1 | 2 H | 1 |
| 2 I | 1 | 2 J | 2 |
| 2 K | 1 | 2 L | 1 |
| 2 M | 3 | 2 P | 3 |
| 2 R | 2 | 2 S | 5 |
| 2 T | 1 | 2 U | 1 |
| 2 W | 1 | 2 X | 2 |
| 2 a | 10 | 2 b | 1 |
| 2 c | 11 | 2 d | 19 |
| 2 e | 8 | 2 f | 2 |
| 2 g | 1 | 2 i | 8 |
| 2 j | 2 | 2 l | 2 |
| 2 m | 21 | 2 n | 5 |
| 2 o | 1 | 2 p | 5 |
| 2 r | 7 | 2 s | 2 |
| 2 t | 6 | 2 v | 1 |
| 2 w | 1 | 2 z | 1 |
| 2', | 1 | 2*S | 1 |
| 2+2 | 2 | 2, | 2 |
| 2,2 | 7 | 2,3 | 5 |
| 2,4 | 7 | 2,5 | 7 |
| 2,6 | 4 | 2,8 | 1 |
| 2-1 | 12 | 2-2 | 6 |
| 2-3 | 1 | 2-4 | 11 |
| 2-6 | 18 | 2-8 | 18 |
| 2-A | 4 | 2-B | 5 |
| 2-C | 4 | 2-D | 1 |
| 2-E | 3 | 2-F | 1 |
| 2-H | 1 | 2-I | 1 |
| 2-M | 14 | 2-N | 4 |
| 2-O | 1 | 2-P | 8 |
| 2-T | 1 | 2-U | 1 |
| 2-X | 1 | 2. | 8 |
| 2.0 | 2 | 2.1 | 3 |
| 2.2 | 1 | 2.3 | 5 |
| 2.4 | 2 | 2.5 | 4 |
| 2.6 | 1 | 2.P | 1 |
| 2/1 | 10 | 2/2 | 4 |
| 2/3 | 2 | 2/4 | 3 |
| 2/5 | 3 | 2/6 | 3 |
| 2/7 | 2 | 2/8 | 2 |
| 2/9 | 1 | 20 | 2 |
| 20 | 84 | 20- | 4 |
| 20. | 14 | 20/ | 9 |
| 200 | 6169 | 201 | 298 |
| 202 | 88 | 203 | 81 |
| 204 | 66 | 205 | 83 |
| 206 | 45 | 207 | 39 |
| 208 | 64 | 209 | 24 |
| 20B | 1 | 20D | 1 |
| 20F | 1 | 20N | 1 |
| 20Q | 1 | 20S | 2 |
| 20a | 31 | 20o | 290 |
| 20s | 4 | 20x | 1 |
| 21 | 2 | 21 | 37 |
| 21- | 2 | 21. | 1 |
| 210 | 50 | 211 | 33 |
| 212 | 32 | 213 | 51 |
| 214 | 102 | 215 | 92 |
| 216 | 101 | 217 | 79 |
| 218 | 51 | 219 | 54 |
| 21P | 1 | 21c | 1 |
| 21o | 93 | 22 | 2 |
| 22 | 23 | 22- | 3 |
| 22. | 1 | 22/ | 1 |
| 220 | 43 | 221 | 56 |
| 222 | 36 | 223 | 30 |
| 224 | 35 | 225 | 73 |
| 226 | 50 | 227 | 55 |
| 228 | 70 | 229 | 73 |
| 22P | 1 | 22a | 2 |
| 22e | 1 | 22o | 70 |
| 22° | 1 | 23 | 1 |
| 23 | 30 | 23- | 1 |
| 23/ | 1 | 230 | 67 |
| 231 | 55 | 232 | 53 |
| 233 | 39 | 234 | 36 |
| 235 | 32 | 236 | 26 |
| 237 | 56 | 238 | 53 |
| 239 | 36 | 23P | 1 |
| 23a | 4 | 23d | 6 |
| 23o | 73 | 23r | 1 |
| 23t | 1 | 24 | 4 |
| 24 | 120 | 24- | 5 |
| 24/ | 9 | 240 | 34 |
| 241 | 30 | 242 | 25 |
| 243 | 28 | 244 | 19 |
| 245 | 21 | 246 | 38 |
| 247 | 31 | 248 | 24 |
| 249 | 33 | 24A | 1 |
| 24K | 1 | 24P | 1 |
| 24S | 2 | 24a | 2 |
| 24d | 1 | 24f | 1 |
| 24o | 61 | 24p | 1 |
| 24s | 2 | 24t | 1 |
| 25 | 2 | 25 | 55 |
| 25. | 2 | 25/ | 1 |
| 250 | 34 | 251 | 23 |
| 252 | 26 | 253 | 26 |
| 254 | 20 | 255 | 25 |
| 256 | 32 | 257 | 23 |
| 258 | 27 | 259 | 19 |
| 25D | 1 | 25I | 2 |
| 25L | 1 | 25a | 1 |
| 25m | 1 | 25o | 72 |
| 25t | 1 | 25x | 1 |
| 26 | 2 | 26 | 23 |
| 260 | 31 | 261 | 31 |
| 262 | 25 | 263 | 31 |
| 264 | 22 | 265 | 25 |
| 266 | 24 | 267 | 26 |
| 268 | 30 | 269 | 39 |
| 26P | 1 | 26a | 3 |
| 26o | 67 | 27 | 1 |
| 27 | 24 | 270 | 38 |
| 271 | 24 | 272 | 21 |
| 273 | 23 | 274 | 19 |
| 275 | 29 | 276 | 20 |
| 277 | 39 | 278 | 26 |
| 279 | 36 | 27P | 1 |
| 27a | 2 | 27o | 65 |
| 28 | 1 | 28 | 37 |
| 280 | 34 | 281 | 21 |
| 282 | 22 | 283 | 24 |
| 284 | 21 | 285 | 24 |
| 286 | 22 | 287 | 22 |
| 288 | 18 | 289 | 19 |
| 28P | 1 | 28a | 1 |
| 28o | 62 | 29 | 2 |
| 29 | 25 | 29. | 1 |
| 290 | 30 | 291 | 31 |
| 292 | 27 | 293 | 26 |
| 294 | 43 | 295 | 34 |
| 296 | 26 | 297 | 27 |
| 298 | 20 | 299 | 22 |
| 29P | 1 | 29W | 1 |
| 29a | 2 | 29e | 3 |
| 29o | 55 | 2AA | 1 |
| 2AP | 1 | 2AR | 1 |
| 2AY | 1 | 2B | 1 |
| 2B | 1 | 2B1 | 3 |
| 2B9 | 1 | 2BA | 1 |
| 2BE | 3 | 2BL | 1 |
| 2BO | 1 | 2BR | 2 |
| 2BS | 1 | 2Be | 1 |
| 2C | 1 | 2C | 1 |
| 2C- | 27 | 2C= | 1 |
| 2CA | 1 | 2CB | 1 |
| 2CC | 1 | 2CH | 1 |
| 2CR | 2 | 2CU | 1 |
| 2Ce | 1 | 2Ch | 1 |
| 2Co | 1 | 2D | 1 |
| 2D | 4 | 2D- | 1 |
| 2DE | 1 | 2DT | 1 |
| 2Da | 1 | 2EL | 1 |
| 2F- | 1 | 2G | 1 |
| 2G | 3 | 2G+ | 1 |
| 2GA | 1 | 2GB | 1 |
| 2GL | 2 | 2GO | 1 |
| 2GZ | 1 | 2Ge | 2 |
| 2Gr | 1 | 2HB | 1 |
| 2HD | 1 | 2K | 1 |
| 2K | 4 | 2K1 | 2 |
| 2KA | 1 | 2L | 1 |
| 2LD | 1 | 2LO | 1 |
| 2M | 1 | 2M | 1 |
| 2M1 | 2 | 2MA | 5 |
| 2MB | 1 | 2MC | 2 |
| 2ME | 1 | 2MM | 1 |
| 2MT | 1 | 2Mo | 1 |
| 2N2 | 2 | 2N3 | 3 |
| 2N7 | 1 | 2NM | 1 |
| 2NS | 1 | 2NU | 1 |
| 2Ni | 3 | 2P | 1 |
| 2Pa | 4 | 2Ph | 1 |
| 2QN | 1 | 2R | 1 |
| 2R | 1 | 2RD | 1 |
| 2RE | 1 | 2RN | 1 |
| 2RP | 1 | 2RR | 1 |
| 2S1 | 2 | 2S3 | 1 |
| 2S4 | 1 | 2S5 | 1 |
| 2S6 | 1 | 2SE | 1 |
| 2SM | 1 | 2SS | 1 |
| 2ST | 1 | 2Sh | 1 |
| 2TM | 1 | 2Tm | 1 |
| 2Tu | 2 | 2U | 1 |
| 2U | 2 | 2UE | 1 |
| 2UU | 1 | 2V | 1 |
| 2VS | 1 | 2W | 1 |
| 2WG | 1 | 2WO | 1 |
| 2WZ | 1 | 2X4 | 2 |
| 2XL | 2 | 2XS | 1 |
| 2XX | 1 | 2YO | 1 |
| 2ZG | 1 | 2a | 7 |
| 2al | 1 | 2as | 3 |
| 2b | 1 | 2bl | 1 |
| 2by | 2 | 2ch | 4 |
| 2co | 1 | 2d | 10 |
| 2es | 1 | 2fa | 2 |
| 2ge | 2 | 2mo | 2 |
| 2mr | 1 | 2nã | 1 |
| 2o | 333 | 2o/ | 5 |
| 2os | 30 | 2p | 1 |
| 2pr | 1 | 2ra | 1 |
| 2su | 1 | 2wa | 1 |
| 2we | 1 | 2wo | 3 |
| 2x2 | 1 | 2x4 | 2 |
| 2xt | 1 | 2α- | 1 |
| 2β- | 2 |