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 cannot evolve you cannot evolve she cannot evolve we cannot evolve you cannot evolve they cannot evolve
V-ing form
I cannot be evolving you cannot be evolving she cannot be evolving we cannot be evolving you cannot be evolving they cannot be evolving
Perfect
I cannot have evolved you cannot have evolved she cannot have evolved we cannot have evolved you cannot have evolved they cannot have evolved
V-ing perfect
I cannot have been evolving you cannot have been evolving she cannot have been evolving we cannot have been evolving you cannot have been evolving they cannot 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 I not evolve? can you not evolve? can she not evolve? can we not evolve? can you not evolve? can they not evolve?
V-ing form
can I not be evolving? can you not be evolving? can she not be evolving? can we not be evolving? can you not be evolving? can they not be evolving?
Perfect
can I not have evolved? can you not have evolved? can she not have evolved? can we not have evolved? can you not have evolved? can they not have evolved?
V-ing perfect
can I not have been evolving? can you not have been evolving? can she not have been evolving? can we not have been evolving? can you not have been evolving? can they not have been evolving?