I can conclude you can conclude she can conclude we can conclude you can conclude they can conclude
V-ing form
I can be concluding you can be concluding she can be concluding we can be concluding you can be concluding they can be concluding
Perfect
I can have concluded you can have concluded she can have concluded we can have concluded you can have concluded they can have concluded
V-ing perfect
I can have been concluding you can have been concluding she can have been concluding we can have been concluding you can have been concluding they can have been concluding
Negation
Simple form
I cannot conclude you cannot conclude she cannot conclude we cannot conclude you cannot conclude they cannot conclude
V-ing form
I cannot be concluding you cannot be concluding she cannot be concluding we cannot be concluding you cannot be concluding they cannot be concluding
Perfect
I cannot have concluded you cannot have concluded she cannot have concluded we cannot have concluded you cannot have concluded they cannot have concluded
V-ing perfect
I cannot have been concluding you cannot have been concluding she cannot have been concluding we cannot have been concluding you cannot have been concluding they cannot have been concluding
Interrogative form
Simple form
can I conclude? can you conclude? can she conclude? can we conclude? can you conclude? can they conclude?
V-ing form
can I be concluding? can you be concluding? can she be concluding? can we be concluding? can you be concluding? can they be concluding?
Perfect
can I have concluded? can you have concluded? can she have concluded? can we have concluded? can you have concluded? can they have concluded?
V-ing perfect
can I have been concluding? can you have been concluding? can she have been concluding? can we have been concluding? can you have been concluding? can they have been concluding?
Interro-negative form
Simple form
can I not conclude? can you not conclude? can she not conclude? can we not conclude? can you not conclude? can they not conclude?
V-ing form
can I not be concluding? can you not be concluding? can she not be concluding? can we not be concluding? can you not be concluding? can they not be concluding?
Perfect
can I not have concluded? can you not have concluded? can she not have concluded? can we not have concluded? can you not have concluded? can they not have concluded?
V-ing perfect
can I not have been concluding? can you not have been concluding? can she not have been concluding? can we not have been concluding? can you not have been concluding? can they not have been concluding?