English verb conjugation
CAN STRING

Irregular verb: string - strung - strung

Affirmation

Simple form	V-ing form
I can string you can string he can string we can string you can string they can string	I can be stringing you can be stringing he can be stringing we can be stringing you can be stringing they can be stringing
Perfect	V-ing perfect
I can have strung you can have strung he can have strung we can have strung you can have strung they can have strung	I can have been stringing you can have been stringing he can have been stringing we can have been stringing you can have been stringing they can have been stringing

Negation

Simple form	V-ing form
I can't string you can't string he can't string we can't string you can't string they can't string	I can't be stringing you can't be stringing he can't be stringing we can't be stringing you can't be stringing they can't be stringing
Perfect	V-ing perfect
I can't have strung you can't have strung he can't have strung we can't have strung you can't have strung they can't have strung	I can't have been stringing you can't have been stringing he can't have been stringing we can't have been stringing you can't have been stringing they can't have been stringing

Interrogative form

Simple form	V-ing form
can I string? can you string? can he string? can we string? can you string? can they string?	can I be stringing? can you be stringing? can he be stringing? can we be stringing? can you be stringing? can they be stringing?
Perfect	V-ing perfect
can I have strung? can you have strung? can he have strung? can we have strung? can you have strung? can they have strung?	can I have been stringing? can you have been stringing? can he have been stringing? can we have been stringing? can you have been stringing? can they have been stringing?

Interro-negative form

Simple form	V-ing form
can't I string? can't you string? can't he string? can't we string? can't you string? can't they string?	can't I be stringing? can't you be stringing? can't he be stringing? can't we be stringing? can't you be stringing? can't they be stringing?
Perfect	V-ing perfect
can't I have strung? can't you have strung? can't he have strung? can't we have strung? can't you have strung? can't they have strung?	can't I have been stringing? can't you have been stringing? can't he have been stringing? can't we have been stringing? can't you have been stringing? can't they have been stringing?