I can etch you can etch she can etch we can etch you can etch they can etch
V-ing form
I can be etching you can be etching she can be etching we can be etching you can be etching they can be etching
Perfect
I can have etched you can have etched she can have etched we can have etched you can have etched they can have etched
V-ing perfect
I can have been etching you can have been etching she can have been etching we can have been etching you can have been etching they can have been etching
Negation
Simple form
I can't etch you can't etch she can't etch we can't etch you can't etch they can't etch
V-ing form
I can't be etching you can't be etching she can't be etching we can't be etching you can't be etching they can't be etching
Perfect
I can't have etched you can't have etched she can't have etched we can't have etched you can't have etched they can't have etched
V-ing perfect
I can't have been etching you can't have been etching she can't have been etching we can't have been etching you can't have been etching they can't have been etching
Interrogative form
Simple form
can I etch? can you etch? can she etch? can we etch? can you etch? can they etch?
V-ing form
can I be etching? can you be etching? can she be etching? can we be etching? can you be etching? can they be etching?
Perfect
can I have etched? can you have etched? can she have etched? can we have etched? can you have etched? can they have etched?
V-ing perfect
can I have been etching? can you have been etching? can she have been etching? can we have been etching? can you have been etching? can they have been etching?
Interro-negative form
Simple form
can't I etch? can't you etch? can't she etch? can't we etch? can't you etch? can't they etch?
V-ing form
can't I be etching? can't you be etching? can't she be etching? can't we be etching? can't you be etching? can't they be etching?
Perfect
can't I have etched? can't you have etched? can't she have etched? can't we have etched? can't you have etched? can't they have etched?
V-ing perfect
can't I have been etching? can't you have been etching? can't she have been etching? can't we have been etching? can't you have been etching? can't they have been etching?