English verb conjugation
CAN CHOIR

Regular verb: choir - choired - choired

Affirmation

Simple form	V-ing form
I can choir you can choir he can choir we can choir you can choir they can choir	I can be choiring you can be choiring he can be choiring we can be choiring you can be choiring they can be choiring
Perfect	V-ing perfect
I can have choired you can have choired he can have choired we can have choired you can have choired they can have choired	I can have been choiring you can have been choiring he can have been choiring we can have been choiring you can have been choiring they can have been choiring

Negation

Simple form	V-ing form
I cannot choir you cannot choir he cannot choir we cannot choir you cannot choir they cannot choir	I cannot be choiring you cannot be choiring he cannot be choiring we cannot be choiring you cannot be choiring they cannot be choiring
Perfect	V-ing perfect
I cannot have choired you cannot have choired he cannot have choired we cannot have choired you cannot have choired they cannot have choired	I cannot have been choiring you cannot have been choiring he cannot have been choiring we cannot have been choiring you cannot have been choiring they cannot have been choiring

Interrogative form

Simple form	V-ing form
can I choir? can you choir? can he choir? can we choir? can you choir? can they choir?	can I be choiring? can you be choiring? can he be choiring? can we be choiring? can you be choiring? can they be choiring?
Perfect	V-ing perfect
can I have choired? can you have choired? can he have choired? can we have choired? can you have choired? can they have choired?	can I have been choiring? can you have been choiring? can he have been choiring? can we have been choiring? can you have been choiring? can they have been choiring?

Interro-negative form

Simple form	V-ing form
can I not choir? can you not choir? can he not choir? can we not choir? can you not choir? can they not choir?	can I not be choiring? can you not be choiring? can he not be choiring? can we not be choiring? can you not be choiring? can they not be choiring?
Perfect	V-ing perfect
can I not have choired? can you not have choired? can he not have choired? can we not have choired? can you not have choired? can they not have choired?	can I not have been choiring? can you not have been choiring? can he not have been choiring? can we not have been choiring? can you not have been choiring? can they not have been choiring?