Except for the habitual marker -ba and the progressive marker -ndo (both suffixed to verb), TAM markers are preverbal in Palenquero. This includes the future marker tan, progressive ta, past (or anterior) a, conditional aké, habitual asé, etc.
It should be kept in mind, however, that the postverbal habitual marker -ba and the progressive marker -ndo are very common in the creole, so that Palenqueros are used to seeing at least some TAM particles in post- rather than preverbal position.
Source: de Friedemann and Patiño Rosselli 1983: 259