English verb conjugation
CAN SPIRE

Regular verb: spire - spired - spired

Affirmation

Simple form	V-ing form
I can spire you can spire he can spire we can spire you can spire they can spire	I can be spiring you can be spiring he can be spiring we can be spiring you can be spiring they can be spiring
Perfect	V-ing perfect
I can have spired you can have spired he can have spired we can have spired you can have spired they can have spired	I can have been spiring you can have been spiring he can have been spiring we can have been spiring you can have been spiring they can have been spiring

Negation

Simple form	V-ing form
I can't spire you can't spire he can't spire we can't spire you can't spire they can't spire	I can't be spiring you can't be spiring he can't be spiring we can't be spiring you can't be spiring they can't be spiring
Perfect	V-ing perfect
I can't have spired you can't have spired he can't have spired we can't have spired you can't have spired they can't have spired	I can't have been spiring you can't have been spiring he can't have been spiring we can't have been spiring you can't have been spiring they can't have been spiring

Interrogative form

Simple form	V-ing form
can I spire? can you spire? can he spire? can we spire? can you spire? can they spire?	can I be spiring? can you be spiring? can he be spiring? can we be spiring? can you be spiring? can they be spiring?
Perfect	V-ing perfect
can I have spired? can you have spired? can he have spired? can we have spired? can you have spired? can they have spired?	can I have been spiring? can you have been spiring? can he have been spiring? can we have been spiring? can you have been spiring? can they have been spiring?

Interro-negative form

Simple form	V-ing form
can't I spire? can't you spire? can't he spire? can't we spire? can't you spire? can't they spire?	can't I be spiring? can't you be spiring? can't he be spiring? can't we be spiring? can't you be spiring? can't they be spiring?
Perfect	V-ing perfect
can't I have spired? can't you have spired? can't he have spired? can't we have spired? can't you have spired? can't they have spired?	can't I have been spiring? can't you have been spiring? can't he have been spiring? can't we have been spiring? can't you have been spiring? can't they have been spiring?