I firstly imagine how they have being tormented at their last time by corpse facial expression (such opened mouth, corpse stare, pale lips), how they longing for more time and feel bad for something they not done yet, even what they want really do; after that, how may they felt such of being fuck up when brought into coffin/casket and when the coffin/casket being closed. If the casket brought to grave, I imagine how they felt when they casket being buried, when there's no anyone at their grave, and purgatory tormenting phase start. If the coffin brought to crematory, I imagine how they fear to being burn and how tormented they in crematory, after that how they felt too lonely after they ash being erect and purgatory tormenting phase start.