{'fraction_non_alphanumeric': 0.06329113924050633, 'fraction_numerical': 0.023508137432188065, 'mean_word_length': 4.770833333333333, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Chiral fermions from compactification of O(32) and and E(8) x E(8) string theories.

Compactification to four dimensions of a low-energy approximation to ten-dimensional O(32) string theory leads only to grand unification theories with trivial replication of families. The E(8) x E(8) string is more promising and leads in four dimensions to SU(8) with six families. If compactification breaks the symmetry to lower-rank groups, e.g., SU(7) or E(6), there may be any number of families. In the SU(8) and SU(7) models there is nontrivial family symmetry.