estaban incinerando
-they/you were incinerating
Imperfect progressiveellos/ellas/ustedesconjugation ofincinerar.

incinerar

Pero si es cierto, lo único que significa es que no se estaban incinerando cuerpos en esos días en concreto.
But if true, all this means is that corpses were not being burned on those particular days.
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to cluck