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 can't clog you can't clog he can't clog we can't clog you can't clog they can't clog	I can't be clogging you can't be clogging he can't be clogging we can't be clogging you can't be clogging they can't be clogging
Perfect	V-ing perfect
I can't have clogged you can't have clogged he can't have clogged we can't have clogged you can't have clogged they can't have clogged	I can't have been clogging you can't have been clogging he can't have been clogging we can't have been clogging you can't have been clogging they can't 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't I clog? can't you clog? can't he clog? can't we clog? can't you clog? can't they clog?	can't I be clogging? can't you be clogging? can't he be clogging? can't we be clogging? can't you be clogging? can't they be clogging?
Perfect	V-ing perfect
can't I have clogged? can't you have clogged? can't he have clogged? can't we have clogged? can't you have clogged? can't they have clogged?	can't I have been clogging? can't you have been clogging? can't he have been clogging? can't we have been clogging? can't you have been clogging? can't they have been clogging?