400
Language
400, 401, 403, 404, 407, 408, 409, ...
410
Linguistics
410, 413, 414, 415, 417, 418, 419, ...
420
English & Old English
420, 421, 422, 423, 425, 427, 428, ...
430
Germanic languages; German
430, 431, 433, 435, 437, 438, 439, ...
440
Romance languages; French
440, 441, 443, 445, 447, 448, 449, ...
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450
Italian, Romanian, Rhaeto-Romantic
450, 451, 453, 455, 457, 458, 459, ...
460
Spanish & Portugese languages
460, 461, 463, 465, 467, 468, 469, ...
470
Italic; Latin
470, 471, 473, 475, 477, 478, 479, ...
480
Hellenic languages; Classical Greek
480, 481, 482, 485, 487, 488, 489, ...
490
Other languages
491, 492, 494, 495, 496, 497, 499, ...
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