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