English verb conjugation
CAN EXCRETE

Regular verb: excrete - excreted - excreted

Affirmation

Simple form	V-ing form
I can excrete you can excrete he can excrete we can excrete you can excrete they can excrete	I can be excreting you can be excreting he can be excreting we can be excreting you can be excreting they can be excreting
Perfect	V-ing perfect
I can have excreted you can have excreted he can have excreted we can have excreted you can have excreted they can have excreted	I can have been excreting you can have been excreting he can have been excreting we can have been excreting you can have been excreting they can have been excreting

Negation

Simple form	V-ing form
I can't excrete you can't excrete he can't excrete we can't excrete you can't excrete they can't excrete	I can't be excreting you can't be excreting he can't be excreting we can't be excreting you can't be excreting they can't be excreting
Perfect	V-ing perfect
I can't have excreted you can't have excreted he can't have excreted we can't have excreted you can't have excreted they can't have excreted	I can't have been excreting you can't have been excreting he can't have been excreting we can't have been excreting you can't have been excreting they can't have been excreting

Interrogative form

Simple form	V-ing form
can I excrete? can you excrete? can he excrete? can we excrete? can you excrete? can they excrete?	can I be excreting? can you be excreting? can he be excreting? can we be excreting? can you be excreting? can they be excreting?
Perfect	V-ing perfect
can I have excreted? can you have excreted? can he have excreted? can we have excreted? can you have excreted? can they have excreted?	can I have been excreting? can you have been excreting? can he have been excreting? can we have been excreting? can you have been excreting? can they have been excreting?

Interro-negative form

Simple form	V-ing form
can't I excrete? can't you excrete? can't he excrete? can't we excrete? can't you excrete? can't they excrete?	can't I be excreting? can't you be excreting? can't he be excreting? can't we be excreting? can't you be excreting? can't they be excreting?
Perfect	V-ing perfect
can't I have excreted? can't you have excreted? can't he have excreted? can't we have excreted? can't you have excreted? can't they have excreted?	can't I have been excreting? can't you have been excreting? can't he have been excreting? can't we have been excreting? can't you have been excreting? can't they have been excreting?