I can louden you can louden she can louden we can louden you can louden they can louden
V-ing form
I can be loudening you can be loudening she can be loudening we can be loudening you can be loudening they can be loudening
Perfect
I can have loudened you can have loudened she can have loudened we can have loudened you can have loudened they can have loudened
V-ing perfect
I can have been loudening you can have been loudening she can have been loudening we can have been loudening you can have been loudening they can have been loudening
Negation
Simple form
I cannot louden you cannot louden she cannot louden we cannot louden you cannot louden they cannot louden
V-ing form
I cannot be loudening you cannot be loudening she cannot be loudening we cannot be loudening you cannot be loudening they cannot be loudening
Perfect
I cannot have loudened you cannot have loudened she cannot have loudened we cannot have loudened you cannot have loudened they cannot have loudened
V-ing perfect
I cannot have been loudening you cannot have been loudening she cannot have been loudening we cannot have been loudening you cannot have been loudening they cannot have been loudening
Interrogative form
Simple form
can I louden? can you louden? can she louden? can we louden? can you louden? can they louden?
V-ing form
can I be loudening? can you be loudening? can she be loudening? can we be loudening? can you be loudening? can they be loudening?
Perfect
can I have loudened? can you have loudened? can she have loudened? can we have loudened? can you have loudened? can they have loudened?
V-ing perfect
can I have been loudening? can you have been loudening? can she have been loudening? can we have been loudening? can you have been loudening? can they have been loudening?
Interro-negative form
Simple form
can I not louden? can you not louden? can she not louden? can we not louden? can you not louden? can they not louden?
V-ing form
can I not be loudening? can you not be loudening? can she not be loudening? can we not be loudening? can you not be loudening? can they not be loudening?
Perfect
can I not have loudened? can you not have loudened? can she not have loudened? can we not have loudened? can you not have loudened? can they not have loudened?
V-ing perfect
can I not have been loudening? can you not have been loudening? can she not have been loudening? can we not have been loudening? can you not have been loudening? can they not have been loudening?