could tetanize
Regular verb: tetanize - tetanized- tetanized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could tetanize
you could tetanize
she could tetanize
we could tetanize
you could tetanize
they could tetanize 	I could be tetanizing
you could be tetanizing
she could be tetanizing
we could be tetanizing
you could be tetanizing
they could be tetanizing	I could have tetanized
you could have tetanized
she could have tetanized
we could have tetanized
you could have tetanized
they could have tetanized	I could have been tetanizing
you could have been tetanizing
she could have been tetanizing
we could have been tetanizing
you could have been tetanizing
they could have been tetanizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't tetanize
you couldn't tetanize
she couldn't tetanize
we couldn't tetanize
you couldn't tetanize
they couldn't tetanize 	I couldn't be tetanizing
you couldn't be tetanizing
she couldn't be tetanizing
we couldn't be tetanizing
you couldn't be tetanizing
they couldn't be tetanizing	I couldn't have tetanized
you couldn't have tetanized
she couldn't have tetanized
we couldn't have tetanized
you couldn't have tetanized
they couldn't have tetanized	I couldn't have been tetanizing
you couldn't have been tetanizing
she couldn't have been tetanizing
we couldn't have been tetanizing
you couldn't have been tetanizing
they couldn't have been tetanizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I tetanize?
could you tetanize?
could she tetanize?
could we tetanize?
could you tetanize?
could they tetanize? 	could I be tetanizing?
could you be tetanizing?
could she be tetanizing?
could we be tetanizing?
could you be tetanizing?
could they be tetanizing? 	could I have tetanized?
could you have tetanized?
could she have tetanized?
could we have tetanized?
could you have tetanized?
could they have tetanized? 	could I have been tetanizing?
could you have been tetanizing?
could she have been tetanizing?
could we have been tetanizing?
could you have been tetanizing?
could they have been tetanizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I tetanize?
couldn't you tetanize?
couldn't she tetanize?
couldn't we tetanize?
couldn't you tetanize?
couldn't they tetanize? 	couldn't I be tetanizing?
couldn't you be tetanizing?
couldn't she be tetanizing?
couldn't we be tetanizing?
couldn't you be tetanizing?
couldn't they be tetanizing? 	couldn't I have tetanized?
couldn't you have tetanized?
couldn't she have tetanized?
couldn't we have tetanized?
couldn't you have tetanized?
couldn't they have tetanized? 	couldn't I have been tetanizing?
couldn't you have been tetanizing?
couldn't she have been tetanizing?
couldn't we have been tetanizing?
couldn't you have been tetanizing?
couldn't they have been tetanizing?