I can crawl you can crawl he can crawl we can crawl you can crawl they can crawl
Forma con V-ing
I can be crawling you can be crawling he can be crawling we can be crawling you can be crawling they can be crawling
Perfecto
I can have crawled you can have crawled he can have crawled we can have crawled you can have crawled they can have crawled
Perfecto con V-ing
I can have been crawling you can have been crawling he can have been crawling we can have been crawling you can have been crawling they can have been crawling
Negación
Forma simple
I can't crawl you can't crawl he can't crawl we can't crawl you can't crawl they can't crawl
Forma con V-ing
I can't be crawling you can't be crawling he can't be crawling we can't be crawling you can't be crawling they can't be crawling
Perfecto
I can't have crawled you can't have crawled he can't have crawled we can't have crawled you can't have crawled they can't have crawled
Perfecto con V-ing
I can't have been crawling you can't have been crawling he can't have been crawling we can't have been crawling you can't have been crawling they can't have been crawling
Forma interrogativa
Forma simple
can I crawl? can you crawl? can he crawl? can we crawl? can you crawl? can they crawl?
Forma con V-ing
can I be crawling? can you be crawling? can he be crawling? can we be crawling? can you be crawling? can they be crawling?
Perfecto
can I have crawled? can you have crawled? can he have crawled? can we have crawled? can you have crawled? can they have crawled?
Perfecto con V-ing
can I have been crawling? can you have been crawling? can he have been crawling? can we have been crawling? can you have been crawling? can they have been crawling?
Forma interro-negativa
Forma simple
can't I crawl? can't you crawl? can't he crawl? can't we crawl? can't you crawl? can't they crawl?
Forma con V-ing
can't I be crawling? can't you be crawling? can't he be crawling? can't we be crawling? can't you be crawling? can't they be crawling?
Perfecto
can't I have crawled? can't you have crawled? can't he have crawled? can't we have crawled? can't you have crawled? can't they have crawled?
Perfecto con V-ing
can't I have been crawling? can't you have been crawling? can't he have been crawling? can't we have been crawling? can't you have been crawling? can't they have been crawling?