English verb conjugation
CAN SIZE

Regular verb: size - sized - sized

Affirmation

Simple form	V-ing form
I can size you can size he can size we can size you can size they can size	I can be sizing you can be sizing he can be sizing we can be sizing you can be sizing they can be sizing
Perfect	V-ing perfect
I can have sized you can have sized he can have sized we can have sized you can have sized they can have sized	I can have been sizing you can have been sizing he can have been sizing we can have been sizing you can have been sizing they can have been sizing

Negation

Simple form	V-ing form
I can't size you can't size he can't size we can't size you can't size they can't size	I can't be sizing you can't be sizing he can't be sizing we can't be sizing you can't be sizing they can't be sizing
Perfect	V-ing perfect
I can't have sized you can't have sized he can't have sized we can't have sized you can't have sized they can't have sized	I can't have been sizing you can't have been sizing he can't have been sizing we can't have been sizing you can't have been sizing they can't have been sizing

Interrogative form

Simple form	V-ing form
can I size? can you size? can he size? can we size? can you size? can they size?	can I be sizing? can you be sizing? can he be sizing? can we be sizing? can you be sizing? can they be sizing?
Perfect	V-ing perfect
can I have sized? can you have sized? can he have sized? can we have sized? can you have sized? can they have sized?	can I have been sizing? can you have been sizing? can he have been sizing? can we have been sizing? can you have been sizing? can they have been sizing?

Interro-negative form

Simple form	V-ing form
can't I size? can't you size? can't he size? can't we size? can't you size? can't they size?	can't I be sizing? can't you be sizing? can't he be sizing? can't we be sizing? can't you be sizing? can't they be sizing?
Perfect	V-ing perfect
can't I have sized? can't you have sized? can't he have sized? can't we have sized? can't you have sized? can't they have sized?	can't I have been sizing? can't you have been sizing? can't he have been sizing? can't we have been sizing? can't you have been sizing? can't they have been sizing?