Until 1994 "ch" was treated as a single letter in Spanish collation order, inserted between C and D; in this way, "mancha" was after "manco" and before "manda". However, an April 1994 vote in the 10th Congress of the Association of Spanish Language Academies adopted the standard international collation rules, so "ch" is now considered a sequence of two distinct characters, and dictionaries now place words starting with "ch-" between those starting with "ce-" and "ci-", as there are no words that start with "cf-" or "cg-" in Spanish. Similarly, "mancha" now precedes "manco" in alphabetical order.