These three population centers lie to the north of Cuautla, Morelos and have been largely absorbed into its urban area; as a result the Tetelcingo language and culture are under intense pressure.
Voiced obstruents and other non-native consonants do occur in loanwords from Spanish, however, and there are many such words in the language.
Generally every 2nd or 3rd person verb, pronoun, postposition or possessed noun must be marked honorifically if its subject or object, designatum, object or possessor (respectively) is a living adult (the speaker's wife or adult children being exceptions).
Extra-honorific forms of several kinds exist, especially for addressing or referring to godparental relations, high officials or God.
Many third person honorifics use morphemes that in Classical Nahuatl were used to mark non-active (passive) verbs or unspecified or plural participants.