I can arch you can arch she can arch we can arch you can arch they can arch
Forma con V-ing
I can be arching you can be arching she can be arching we can be arching you can be arching they can be arching
Perfecto
I can have arched you can have arched she can have arched we can have arched you can have arched they can have arched
Perfecto con V-ing
I can have been arching you can have been arching she can have been arching we can have been arching you can have been arching they can have been arching
Negación
Forma simple
I can't arch you can't arch she can't arch we can't arch you can't arch they can't arch
Forma con V-ing
I can't be arching you can't be arching she can't be arching we can't be arching you can't be arching they can't be arching
Perfecto
I can't have arched you can't have arched she can't have arched we can't have arched you can't have arched they can't have arched
Perfecto con V-ing
I can't have been arching you can't have been arching she can't have been arching we can't have been arching you can't have been arching they can't have been arching
Forma interrogativa
Forma simple
can I arch? can you arch? can she arch? can we arch? can you arch? can they arch?
Forma con V-ing
can I be arching? can you be arching? can she be arching? can we be arching? can you be arching? can they be arching?
Perfecto
can I have arched? can you have arched? can she have arched? can we have arched? can you have arched? can they have arched?
Perfecto con V-ing
can I have been arching? can you have been arching? can she have been arching? can we have been arching? can you have been arching? can they have been arching?
Forma interro-negativa
Forma simple
can't I arch? can't you arch? can't she arch? can't we arch? can't you arch? can't they arch?
Forma con V-ing
can't I be arching? can't you be arching? can't she be arching? can't we be arching? can't you be arching? can't they be arching?
Perfecto
can't I have arched? can't you have arched? can't she have arched? can't we have arched? can't you have arched? can't they have arched?
Perfecto con V-ing
can't I have been arching? can't you have been arching? can't she have been arching? can't we have been arching? can't you have been arching? can't they have been arching?