English verb conjugation
CAN SPEAR

Regular verb: spear - speared - speared

Affirmation

Simple form	V-ing form
I can spear you can spear she can spear we can spear you can spear they can spear	I can be spearing you can be spearing she can be spearing we can be spearing you can be spearing they can be spearing
Perfect	V-ing perfect
I can have speared you can have speared she can have speared we can have speared you can have speared they can have speared	I can have been spearing you can have been spearing she can have been spearing we can have been spearing you can have been spearing they can have been spearing

Negation

Simple form	V-ing form
I cannot spear you cannot spear she cannot spear we cannot spear you cannot spear they cannot spear	I cannot be spearing you cannot be spearing she cannot be spearing we cannot be spearing you cannot be spearing they cannot be spearing
Perfect	V-ing perfect
I cannot have speared you cannot have speared she cannot have speared we cannot have speared you cannot have speared they cannot have speared	I cannot have been spearing you cannot have been spearing she cannot have been spearing we cannot have been spearing you cannot have been spearing they cannot have been spearing

Interrogative form

Simple form	V-ing form
can I spear? can you spear? can she spear? can we spear? can you spear? can they spear?	can I be spearing? can you be spearing? can she be spearing? can we be spearing? can you be spearing? can they be spearing?
Perfect	V-ing perfect
can I have speared? can you have speared? can she have speared? can we have speared? can you have speared? can they have speared?	can I have been spearing? can you have been spearing? can she have been spearing? can we have been spearing? can you have been spearing? can they have been spearing?

Interro-negative form

Simple form	V-ing form
can I not spear? can you not spear? can she not spear? can we not spear? can you not spear? can they not spear?	can I not be spearing? can you not be spearing? can she not be spearing? can we not be spearing? can you not be spearing? can they not be spearing?
Perfect	V-ing perfect
can I not have speared? can you not have speared? can she not have speared? can we not have speared? can you not have speared? can they not have speared?	can I not have been spearing? can you not have been spearing? can she not have been spearing? can we not have been spearing? can you not have been spearing? can they not have been spearing?