I can train you can train she can train we can train you can train they can train
V-ing form
I can be training you can be training she can be training we can be training you can be training they can be training
Perfect
I can have trained you can have trained she can have trained we can have trained you can have trained they can have trained
V-ing perfect
I can have been training you can have been training she can have been training we can have been training you can have been training they can have been training
Negation
Simple form
I cannot train you cannot train she cannot train we cannot train you cannot train they cannot train
V-ing form
I cannot be training you cannot be training she cannot be training we cannot be training you cannot be training they cannot be training
Perfect
I cannot have trained you cannot have trained she cannot have trained we cannot have trained you cannot have trained they cannot have trained
V-ing perfect
I cannot have been training you cannot have been training she cannot have been training we cannot have been training you cannot have been training they cannot have been training
Interrogative form
Simple form
can I train? can you train? can she train? can we train? can you train? can they train?
V-ing form
can I be training? can you be training? can she be training? can we be training? can you be training? can they be training?
Perfect
can I have trained? can you have trained? can she have trained? can we have trained? can you have trained? can they have trained?
V-ing perfect
can I have been training? can you have been training? can she have been training? can we have been training? can you have been training? can they have been training?
Interro-negative form
Simple form
can I not train? can you not train? can she not train? can we not train? can you not train? can they not train?
V-ing form
can I not be training? can you not be training? can she not be training? can we not be training? can you not be training? can they not be training?
Perfect
can I not have trained? can you not have trained? can she not have trained? can we not have trained? can you not have trained? can they not have trained?
V-ing perfect
can I not have been training? can you not have been training? can she not have been training? can we not have been training? can you not have been training? can they not have been training?