date name phrase approximative day of year year name era name numeric name expression Republican Calendar prephrase Republican Calendar month name Republican Calendar postphrase complementary day Republican Calendar prephrase decade roman numeral comma Republican Calendar weekday name preposition Republican Calendar postphrase comma the word “year” roman numeral preposition the words “the Republic” day of year season name day of week comma numeric name expression month name month name cardinal number ordinal number comma feast day name day of week year name cardinal number era name forward slash cardinal number ordinal number the word “year” preposition given name Roman numeral year name regnal year double date the word “year” reign name forward slash preposition “of” era name monarch name year number Roman numeral numeric name expression

4.1 Phrase structure rules listed. The form of the PS-RULES are here adjusted to give names of constituents instead of symbols. All six of the rules are combined into a single object diagram below.