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 cannot string you cannot string he cannot string we cannot string you cannot string they cannot string	I cannot be stringing you cannot be stringing he cannot be stringing we cannot be stringing you cannot be stringing they cannot be stringing
Perfect	V-ing perfect
I cannot have strung you cannot have strung he cannot have strung we cannot have strung you cannot have strung they cannot have strung	I cannot have been stringing you cannot have been stringing he cannot have been stringing we cannot have been stringing you cannot have been stringing they cannot 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 I not string? can you not string? can he not string? can we not string? can you not string? can they not string?	can I not be stringing? can you not be stringing? can he not be stringing? can we not be stringing? can you not be stringing? can they not be stringing?
Perfect	V-ing perfect
can I not have strung? can you not have strung? can he not have strung? can we not have strung? can you not have strung? can they not have strung?	can I not have been stringing? can you not have been stringing? can he not have been stringing? can we not have been stringing? can you not have been stringing? can they not have been stringing?