I'd be crawling you'd be crawling he'd be crawling we'd be crawling you'd be crawling they'd be crawling
Perfect
I should've crawled you should've crawled he should've crawled we should've crawled you should've crawled they should've crawled
V-ing perfect
I should've been crawling you should've been crawling he should've been crawling we should've been crawling you should've been crawling they should've been crawling
Negation
Simple form
I shouldn't crawl you shouldn't crawl he shouldn't crawl we shouldn't crawl you shouldn't crawl they shouldn't crawl
V-ing form
I shouldn't be crawling you shouldn't be crawling he shouldn't be crawling we shouldn't be crawling you shouldn't be crawling they shouldn't be crawling
Perfect
I shouldn't have crawled you shouldn't have crawled he shouldn't have crawled we shouldn't have crawled you shouldn't have crawled they shouldn't have crawled
V-ing perfect
I shouldn't have been crawling you shouldn't have been crawling he shouldn't have been crawling we shouldn't have been crawling you shouldn't have been crawling they shouldn't have been crawling
Interrogative form
Simple form
should I crawl? should you crawl? should he crawl? should we crawl? should you crawl? should they crawl?
V-ing form
should I be crawling? should you be crawling? should he be crawling? should we be crawling? should you be crawling? should they be crawling?
Perfect
should I have crawled? should you have crawled? should he have crawled? should we have crawled? should you have crawled? should they have crawled?
V-ing perfect
should I have been crawling? should you have been crawling? should he have been crawling? should we have been crawling? should you have been crawling? should they have been crawling?
Interro-negative form
Simple form
shouldn't I crawl? shouldn't you crawl? shouldn't he crawl? shouldn't we crawl? shouldn't you crawl? shouldn't they crawl?
V-ing form
shouldn't I be crawling? shouldn't you be crawling? shouldn't he be crawling? shouldn't we be crawling? shouldn't you be crawling? shouldn't they be crawling?
Perfect
shouldn't I have crawled? shouldn't you have crawled? shouldn't he have crawled? shouldn't we have crawled? shouldn't you have crawled? shouldn't they have crawled?
V-ing perfect
shouldn't I have been crawling? shouldn't you have been crawling? shouldn't he have been crawling? shouldn't we have been crawling? shouldn't you have been crawling? shouldn't they have been crawling?