English verb conjugation
COULD SPEAR

Regular verb: spear - speared - speared

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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