English verb conjugation
CAN CLEAN

Regular verb: clean - cleaned - cleaned

Affirmation

Simple form	V-ing form
I can clean you can clean he can clean we can clean you can clean they can clean	I can be cleaning you can be cleaning he can be cleaning we can be cleaning you can be cleaning they can be cleaning
Perfect	V-ing perfect
I can have cleaned you can have cleaned he can have cleaned we can have cleaned you can have cleaned they can have cleaned	I can have been cleaning you can have been cleaning he can have been cleaning we can have been cleaning you can have been cleaning they can have been cleaning

Negation

Simple form	V-ing form
I can't clean you can't clean he can't clean we can't clean you can't clean they can't clean	I can't be cleaning you can't be cleaning he can't be cleaning we can't be cleaning you can't be cleaning they can't be cleaning
Perfect	V-ing perfect
I can't have cleaned you can't have cleaned he can't have cleaned we can't have cleaned you can't have cleaned they can't have cleaned	I can't have been cleaning you can't have been cleaning he can't have been cleaning we can't have been cleaning you can't have been cleaning they can't have been cleaning

Interrogative form

Simple form	V-ing form
can I clean? can you clean? can he clean? can we clean? can you clean? can they clean?	can I be cleaning? can you be cleaning? can he be cleaning? can we be cleaning? can you be cleaning? can they be cleaning?
Perfect	V-ing perfect
can I have cleaned? can you have cleaned? can he have cleaned? can we have cleaned? can you have cleaned? can they have cleaned?	can I have been cleaning? can you have been cleaning? can he have been cleaning? can we have been cleaning? can you have been cleaning? can they have been cleaning?

Interro-negative form

Simple form	V-ing form
can't I clean? can't you clean? can't he clean? can't we clean? can't you clean? can't they clean?	can't I be cleaning? can't you be cleaning? can't he be cleaning? can't we be cleaning? can't you be cleaning? can't they be cleaning?
Perfect	V-ing perfect
can't I have cleaned? can't you have cleaned? can't he have cleaned? can't we have cleaned? can't you have cleaned? can't they have cleaned?	can't I have been cleaning? can't you have been cleaning? can't he have been cleaning? can't we have been cleaning? can't you have been cleaning? can't they have been cleaning?