I can crochet you can crochet she can crochet we can crochet you can crochet they can crochet
V-ing form
I can be crocheting you can be crocheting she can be crocheting we can be crocheting you can be crocheting they can be crocheting
Perfect
I can have crocheted you can have crocheted she can have crocheted we can have crocheted you can have crocheted they can have crocheted
V-ing perfect
I can have been crocheting you can have been crocheting she can have been crocheting we can have been crocheting you can have been crocheting they can have been crocheting
Negation
Simple form
I can't crochet you can't crochet she can't crochet we can't crochet you can't crochet they can't crochet
V-ing form
I can't be crocheting you can't be crocheting she can't be crocheting we can't be crocheting you can't be crocheting they can't be crocheting
Perfect
I can't have crocheted you can't have crocheted she can't have crocheted we can't have crocheted you can't have crocheted they can't have crocheted
V-ing perfect
I can't have been crocheting you can't have been crocheting she can't have been crocheting we can't have been crocheting you can't have been crocheting they can't have been crocheting
Interrogative form
Simple form
can I crochet? can you crochet? can she crochet? can we crochet? can you crochet? can they crochet?
V-ing form
can I be crocheting? can you be crocheting? can she be crocheting? can we be crocheting? can you be crocheting? can they be crocheting?
Perfect
can I have crocheted? can you have crocheted? can she have crocheted? can we have crocheted? can you have crocheted? can they have crocheted?
V-ing perfect
can I have been crocheting? can you have been crocheting? can she have been crocheting? can we have been crocheting? can you have been crocheting? can they have been crocheting?
Interro-negative form
Simple form
can't I crochet? can't you crochet? can't she crochet? can't we crochet? can't you crochet? can't they crochet?
V-ing form
can't I be crocheting? can't you be crocheting? can't she be crocheting? can't we be crocheting? can't you be crocheting? can't they be crocheting?
Perfect
can't I have crocheted? can't you have crocheted? can't she have crocheted? can't we have crocheted? can't you have crocheted? can't they have crocheted?
V-ing perfect
can't I have been crocheting? can't you have been crocheting? can't she have been crocheting? can't we have been crocheting? can't you have been crocheting? can't they have been crocheting?