I'll be straining you'll be straining he'll be straining we'll be straining you'll be straining they'll be straining
Future perfect
I'll have strained you'll have strained he'll have strained we'll have strained you'll have strained they'll have strained
Future perfect continuous
I'll have been straining you'll have been straining he'll have been straining we'll have been straining you'll have been straining they'll have been straining
I'd be straining you'd be straining he'd be straining we'd be straining you'd be straining they'd be straining
Past
I'd have strained you'd have strained he'd have strained we'd have strained you'd have strained they'd have strained
Past continuous
I'd have been straining you'd have been straining he'd have been straining we'd have been straining you'd have been straining they'd have been straining