English verb conjugation
CAN RING

Irregular verb: ring - rang - rung

Affirmation

Simple form	V-ing form
I can ring you can ring he can ring we can ring you can ring they can ring	I can be ringing you can be ringing he can be ringing we can be ringing you can be ringing they can be ringing
Perfect	V-ing perfect
I can have rung you can have rung he can have rung we can have rung you can have rung they can have rung	I can have been ringing you can have been ringing he can have been ringing we can have been ringing you can have been ringing they can have been ringing

Negation

Simple form	V-ing form
I can't ring you can't ring he can't ring we can't ring you can't ring they can't ring	I can't be ringing you can't be ringing he can't be ringing we can't be ringing you can't be ringing they can't be ringing
Perfect	V-ing perfect
I can't have rung you can't have rung he can't have rung we can't have rung you can't have rung they can't have rung	I can't have been ringing you can't have been ringing he can't have been ringing we can't have been ringing you can't have been ringing they can't have been ringing

Interrogative form

Simple form	V-ing form
can I ring? can you ring? can he ring? can we ring? can you ring? can they ring?	can I be ringing? can you be ringing? can he be ringing? can we be ringing? can you be ringing? can they be ringing?
Perfect	V-ing perfect
can I have rung? can you have rung? can he have rung? can we have rung? can you have rung? can they have rung?	can I have been ringing? can you have been ringing? can he have been ringing? can we have been ringing? can you have been ringing? can they have been ringing?

Interro-negative form

Simple form	V-ing form
can't I ring? can't you ring? can't he ring? can't we ring? can't you ring? can't they ring?	can't I be ringing? can't you be ringing? can't he be ringing? can't we be ringing? can't you be ringing? can't they be ringing?
Perfect	V-ing perfect
can't I have rung? can't you have rung? can't he have rung? can't we have rung? can't you have rung? can't they have rung?	can't I have been ringing? can't you have been ringing? can't he have been ringing? can't we have been ringing? can't you have been ringing? can't they have been ringing?