I contend contended you contend contended he contend contended we contend contended you contend contended they contend contended
Preterite continuous
I was contend contending you were contend contending he was contend contending we were contend contending you were contend contending they were contend contending
I've been contend contending you've been contend contending he's been contend contending we've been contend contending you've been contend contending they've been contend contending
I'd been contend contending you'd been contend contending he'd been contend contending we'd been contend contending you'd been contend contending they'd been contend contending
I'll be contend contending you'll be contend contending he'll be contend contending we'll be contend contending you'll be contend contending they'll be contend contending
Future perfect
I'll have contend contended you'll have contend contended he'll have contend contended we'll have contend contended you'll have contend contended they'll have contend contended
Future perfect continuous
I'll have been contend contending you'll have been contend contending he'll have been contend contending we'll have been contend contending you'll have been contend contending they'll have been contend contending
I'd be contend contending you'd be contend contending he'd be contend contending we'd be contend contending you'd be contend contending they'd be contend contending
Past
I'd have contend contended you'd have contend contended he'd have contend contended we'd have contend contended you'd have contend contended they'd have contend contended
Past continuous
I'd have been contend contending you'd have been contend contending he'd have been contend contending we'd have been contend contending you'd have been contend contending they'd have been contend contending