I can clean you can clean she can clean we can clean you can clean they can clean
V-ing form
I can be cleaning you can be cleaning she can be cleaning we can be cleaning you can be cleaning they can be cleaning
Perfect
I can have cleaned you can have cleaned she can have cleaned we can have cleaned you can have cleaned they can have cleaned
V-ing perfect
I can have been cleaning you can have been cleaning she can have been cleaning we can have been cleaning you can have been cleaning they can have been cleaning
Negation
Simple form
I cannot clean you cannot clean she cannot clean we cannot clean you cannot clean they cannot clean
V-ing form
I cannot be cleaning you cannot be cleaning she cannot be cleaning we cannot be cleaning you cannot be cleaning they cannot be cleaning
Perfect
I cannot have cleaned you cannot have cleaned she cannot have cleaned we cannot have cleaned you cannot have cleaned they cannot have cleaned
V-ing perfect
I cannot have been cleaning you cannot have been cleaning she cannot have been cleaning we cannot have been cleaning you cannot have been cleaning they cannot have been cleaning
Interrogative form
Simple form
can I clean? can you clean? can she clean? can we clean? can you clean? can they clean?
V-ing form
can I be cleaning? can you be cleaning? can she be cleaning? can we be cleaning? can you be cleaning? can they be cleaning?
Perfect
can I have cleaned? can you have cleaned? can she have cleaned? can we have cleaned? can you have cleaned? can they have cleaned?
V-ing perfect
can I have been cleaning? can you have been cleaning? can she have been cleaning? can we have been cleaning? can you have been cleaning? can they have been cleaning?
Interro-negative form
Simple form
can I not clean? can you not clean? can she not clean? can we not clean? can you not clean? can they not clean?
V-ing form
can I not be cleaning? can you not be cleaning? can she not be cleaning? can we not be cleaning? can you not be cleaning? can they not be cleaning?
Perfect
can I not have cleaned? can you not have cleaned? can she not have cleaned? can we not have cleaned? can you not have cleaned? can they not have cleaned?
V-ing perfect
can I not have been cleaning? can you not have been cleaning? can she not have been cleaning? can we not have been cleaning? can you not have been cleaning? can they not have been cleaning?