I can louden you can louden he can louden we can louden you can louden they can louden
V-ing form
I can be loudening you can be loudening he can be loudening we can be loudening you can be loudening they can be loudening
Perfect
I can have loudened you can have loudened he 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 he can have been loudening we can have been loudening you can have been loudening they can have been loudening
Negation
Simple form
I can't louden you can't louden he can't louden we can't louden you can't louden they can't louden
V-ing form
I can't be loudening you can't be loudening he can't be loudening we can't be loudening you can't be loudening they can't be loudening
Perfect
I can't have loudened you can't have loudened he can't have loudened we can't have loudened you can't have loudened they can't have loudened
V-ing perfect
I can't have been loudening you can't have been loudening he can't have been loudening we can't have been loudening you can't have been loudening they can't have been loudening
Interrogative form
Simple form
can I louden? can you louden? can he louden? can we louden? can you louden? can they louden?
V-ing form
can I be loudening? can you be loudening? can he be loudening? can we be loudening? can you be loudening? can they be loudening?
Perfect
can I have loudened? can you have loudened? can he 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 he have been loudening? can we have been loudening? can you have been loudening? can they have been loudening?
Interro-negative form
Simple form
can't I louden? can't you louden? can't he louden? can't we louden? can't you louden? can't they louden?
V-ing form
can't I be loudening? can't you be loudening? can't he be loudening? can't we be loudening? can't you be loudening? can't they be loudening?
Perfect
can't I have loudened? can't you have loudened? can't he have loudened? can't we have loudened? can't you have loudened? can't they have loudened?
V-ing perfect
can't I have been loudening? can't you have been loudening? can't he have been loudening? can't we have been loudening? can't you have been loudening? can't they have been loudening?