English verb conjugation
CAN CLOG

Regular verb: clog - clogged - clogged

Affirmation

Simple form	V-ing form
I can clog you can clog he can clog we can clog you can clog they can clog	I can be clogging you can be clogging he can be clogging we can be clogging you can be clogging they can be clogging
Perfect	V-ing perfect
I can have clogged you can have clogged he can have clogged we can have clogged you can have clogged they can have clogged	I can have been clogging you can have been clogging he can have been clogging we can have been clogging you can have been clogging they can have been clogging

Negation

Simple form	V-ing form
I cannot clog you cannot clog he cannot clog we cannot clog you cannot clog they cannot clog	I cannot be clogging you cannot be clogging he cannot be clogging we cannot be clogging you cannot be clogging they cannot be clogging
Perfect	V-ing perfect
I cannot have clogged you cannot have clogged he cannot have clogged we cannot have clogged you cannot have clogged they cannot have clogged	I cannot have been clogging you cannot have been clogging he cannot have been clogging we cannot have been clogging you cannot have been clogging they cannot have been clogging

Interrogative form

Simple form	V-ing form
can I clog? can you clog? can he clog? can we clog? can you clog? can they clog?	can I be clogging? can you be clogging? can he be clogging? can we be clogging? can you be clogging? can they be clogging?
Perfect	V-ing perfect
can I have clogged? can you have clogged? can he have clogged? can we have clogged? can you have clogged? can they have clogged?	can I have been clogging? can you have been clogging? can he have been clogging? can we have been clogging? can you have been clogging? can they have been clogging?

Interro-negative form

Simple form	V-ing form
can I not clog? can you not clog? can he not clog? can we not clog? can you not clog? can they not clog?	can I not be clogging? can you not be clogging? can he not be clogging? can we not be clogging? can you not be clogging? can they not be clogging?
Perfect	V-ing perfect
can I not have clogged? can you not have clogged? can he not have clogged? can we not have clogged? can you not have clogged? can they not have clogged?	can I not have been clogging? can you not have been clogging? can he not have been clogging? can we not have been clogging? can you not have been clogging? can they not have been clogging?