I can evolve you can evolve she can evolve we can evolve you can evolve they can evolve
V-ing form
I can be evolving you can be evolving she can be evolving we can be evolving you can be evolving they can be evolving
Perfect
I can have evolved you can have evolved she can have evolved we can have evolved you can have evolved they can have evolved
V-ing perfect
I can have been evolving you can have been evolving she can have been evolving we can have been evolving you can have been evolving they can have been evolving
Negation
Simple form
I can't evolve you can't evolve she can't evolve we can't evolve you can't evolve they can't evolve
V-ing form
I can't be evolving you can't be evolving she can't be evolving we can't be evolving you can't be evolving they can't be evolving
Perfect
I can't have evolved you can't have evolved she can't have evolved we can't have evolved you can't have evolved they can't have evolved
V-ing perfect
I can't have been evolving you can't have been evolving she can't have been evolving we can't have been evolving you can't have been evolving they can't have been evolving
Interrogative form
Simple form
can I evolve? can you evolve? can she evolve? can we evolve? can you evolve? can they evolve?
V-ing form
can I be evolving? can you be evolving? can she be evolving? can we be evolving? can you be evolving? can they be evolving?
Perfect
can I have evolved? can you have evolved? can she have evolved? can we have evolved? can you have evolved? can they have evolved?
V-ing perfect
can I have been evolving? can you have been evolving? can she have been evolving? can we have been evolving? can you have been evolving? can they have been evolving?
Interro-negative form
Simple form
can't I evolve? can't you evolve? can't she evolve? can't we evolve? can't you evolve? can't they evolve?
V-ing form
can't I be evolving? can't you be evolving? can't she be evolving? can't we be evolving? can't you be evolving? can't they be evolving?
Perfect
can't I have evolved? can't you have evolved? can't she have evolved? can't we have evolved? can't you have evolved? can't they have evolved?
V-ing perfect
can't I have been evolving? can't you have been evolving? can't she have been evolving? can't we have been evolving? can't you have been evolving? can't they have been evolving?