The rules that use the vocabulary item "hemtt" are:

<specific_vehicle_type-pl>

hemtt cargoes

hemtt fuels

hemtt wreckers

<specific_vehicle_type-sing>

hemtt cargo

hemtt fuel

hemtt wrecker

<specific_vehicle_type-not_creatable-pl>

hemtt cargoes

hemtt fuels

hemtt wreckers

<specific_vehicle_type-creatable-sing>

hemtt cargo

hemtt fuel

hemtt wrecker

<specific_vehicle_type-not_creatable-sing>

hemtt cargo

hemtt fuel

hemtt wrecker

<specific_vehicle_type-not_creatable>

hemtt cargo

hemtt cargoes

hemtt fuel

hemtt fuels

hemtt wrecker

hemtt wreckers