I've been snowploughing you've been snowploughing he's been snowploughing we've been snowploughing you've been snowploughing they've been snowploughing
I'll be snowploughing you'll be snowploughing he'll be snowploughing we'll be snowploughing you'll be snowploughing they'll be snowploughing
Future perfect
I'll have snowploughed you'll have snowploughed he'll have snowploughed we'll have snowploughed you'll have snowploughed they'll have snowploughed
Future perfect continuous
I'll have been snowploughing you'll have been snowploughing he'll have been snowploughing we'll have been snowploughing you'll have been snowploughing they'll have been snowploughing
I'd be snowploughing you'd be snowploughing he'd be snowploughing we'd be snowploughing you'd be snowploughing they'd be snowploughing
Past
I'd have snowploughed you'd have snowploughed he'd have snowploughed we'd have snowploughed you'd have snowploughed they'd have snowploughed
Past continuous
I'd have been snowploughing you'd have been snowploughing he'd have been snowploughing we'd have been snowploughing you'd have been snowploughing they'd have been snowploughing