English verb conjugation
CAN ETCH

Regular verb: etch - etched - etched

Affirmation

Simple form	V-ing form
I can etch you can etch he can etch we can etch you can etch they can etch	I can be etching you can be etching he can be etching we can be etching you can be etching they can be etching
Perfect	V-ing perfect
I can have etched you can have etched he can have etched we can have etched you can have etched they can have etched	I can have been etching you can have been etching he can have been etching we can have been etching you can have been etching they can have been etching

Negation

Simple form	V-ing form
I cannot etch you cannot etch he cannot etch we cannot etch you cannot etch they cannot etch	I cannot be etching you cannot be etching he cannot be etching we cannot be etching you cannot be etching they cannot be etching
Perfect	V-ing perfect
I cannot have etched you cannot have etched he cannot have etched we cannot have etched you cannot have etched they cannot have etched	I cannot have been etching you cannot have been etching he cannot have been etching we cannot have been etching you cannot have been etching they cannot have been etching

Interrogative form

Simple form	V-ing form
can I etch? can you etch? can he etch? can we etch? can you etch? can they etch?	can I be etching? can you be etching? can he be etching? can we be etching? can you be etching? can they be etching?
Perfect	V-ing perfect
can I have etched? can you have etched? can he have etched? can we have etched? can you have etched? can they have etched?	can I have been etching? can you have been etching? can he have been etching? can we have been etching? can you have been etching? can they have been etching?

Interro-negative form

Simple form	V-ing form
can I not etch? can you not etch? can he not etch? can we not etch? can you not etch? can they not etch?	can I not be etching? can you not be etching? can he not be etching? can we not be etching? can you not be etching? can they not be etching?
Perfect	V-ing perfect
can I not have etched? can you not have etched? can he not have etched? can we not have etched? can you not have etched? can they not have etched?	can I not have been etching? can you not have been etching? can he not have been etching? can we not have been etching? can you not have been etching? can they not have been etching?