English verb conjugation
CAN ROUND

Regular verb: round - rounded - rounded

Affirmation

Simple form	V-ing form
I can round you can round he can round we can round you can round they can round	I can be rounding you can be rounding he can be rounding we can be rounding you can be rounding they can be rounding
Perfect	V-ing perfect
I can have rounded you can have rounded he can have rounded we can have rounded you can have rounded they can have rounded	I can have been rounding you can have been rounding he can have been rounding we can have been rounding you can have been rounding they can have been rounding

Negation

Simple form	V-ing form
I can't round you can't round he can't round we can't round you can't round they can't round	I can't be rounding you can't be rounding he can't be rounding we can't be rounding you can't be rounding they can't be rounding
Perfect	V-ing perfect
I can't have rounded you can't have rounded he can't have rounded we can't have rounded you can't have rounded they can't have rounded	I can't have been rounding you can't have been rounding he can't have been rounding we can't have been rounding you can't have been rounding they can't have been rounding

Interrogative form

Simple form	V-ing form
can I round? can you round? can he round? can we round? can you round? can they round?	can I be rounding? can you be rounding? can he be rounding? can we be rounding? can you be rounding? can they be rounding?
Perfect	V-ing perfect
can I have rounded? can you have rounded? can he have rounded? can we have rounded? can you have rounded? can they have rounded?	can I have been rounding? can you have been rounding? can he have been rounding? can we have been rounding? can you have been rounding? can they have been rounding?

Interro-negative form

Simple form	V-ing form
can't I round? can't you round? can't he round? can't we round? can't you round? can't they round?	can't I be rounding? can't you be rounding? can't he be rounding? can't we be rounding? can't you be rounding? can't they be rounding?
Perfect	V-ing perfect
can't I have rounded? can't you have rounded? can't he have rounded? can't we have rounded? can't you have rounded? can't they have rounded?	can't I have been rounding? can't you have been rounding? can't he have been rounding? can't we have been rounding? can't you have been rounding? can't they have been rounding?