I can experiment you can experiment she can experiment we can experiment you can experiment they can experiment
V-ing form
I can be experimenting you can be experimenting she can be experimenting we can be experimenting you can be experimenting they can be experimenting
Perfect
I can have experimented you can have experimented she can have experimented we can have experimented you can have experimented they can have experimented
V-ing perfect
I can have been experimenting you can have been experimenting she can have been experimenting we can have been experimenting you can have been experimenting they can have been experimenting
Negation
Simple form
I cannot experiment you cannot experiment she cannot experiment we cannot experiment you cannot experiment they cannot experiment
V-ing form
I cannot be experimenting you cannot be experimenting she cannot be experimenting we cannot be experimenting you cannot be experimenting they cannot be experimenting
Perfect
I cannot have experimented you cannot have experimented she cannot have experimented we cannot have experimented you cannot have experimented they cannot have experimented
V-ing perfect
I cannot have been experimenting you cannot have been experimenting she cannot have been experimenting we cannot have been experimenting you cannot have been experimenting they cannot have been experimenting
Interrogative form
Simple form
can I experiment? can you experiment? can she experiment? can we experiment? can you experiment? can they experiment?
V-ing form
can I be experimenting? can you be experimenting? can she be experimenting? can we be experimenting? can you be experimenting? can they be experimenting?
Perfect
can I have experimented? can you have experimented? can she have experimented? can we have experimented? can you have experimented? can they have experimented?
V-ing perfect
can I have been experimenting? can you have been experimenting? can she have been experimenting? can we have been experimenting? can you have been experimenting? can they have been experimenting?
Interro-negative form
Simple form
can I not experiment? can you not experiment? can she not experiment? can we not experiment? can you not experiment? can they not experiment?
V-ing form
can I not be experimenting? can you not be experimenting? can she not be experimenting? can we not be experimenting? can you not be experimenting? can they not be experimenting?
Perfect
can I not have experimented? can you not have experimented? can she not have experimented? can we not have experimented? can you not have experimented? can they not have experimented?
V-ing perfect
can I not have been experimenting? can you not have been experimenting? can she not have been experimenting? can we not have been experimenting? can you not have been experimenting? can they not have been experimenting?