I've been stair-steping you've been stair-steping she's been stair-steping we've been stair-steping you've been stair-steping they've been stair-steping
I'll be stair-steping you'll be stair-steping she'll be stair-steping we'll be stair-steping you'll be stair-steping they'll be stair-steping
Future perfect
I'll have stair-steped you'll have stair-steped she'll have stair-steped we'll have stair-steped you'll have stair-steped they'll have stair-steped
Future perfect continuous
I'll have been stair-steping you'll have been stair-steping she'll have been stair-steping we'll have been stair-steping you'll have been stair-steping they'll have been stair-steping
I'd be stair-steping you'd be stair-steping she'd be stair-steping we'd be stair-steping you'd be stair-steping they'd be stair-steping
Past
I'd have stair-steped you'd have stair-steped she'd have stair-steped we'd have stair-steped you'd have stair-steped they'd have stair-steped
Past continuous
I'd have been stair-steping you'd have been stair-steping she'd have been stair-steping we'd have been stair-steping you'd have been stair-steping they'd have been stair-steping