could mistype
Regular verb: mistype - mistyped- mistyped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could mistype
you could mistype
he could mistype
we could mistype
you could mistype
they could mistype 	I could be mistyping
you could be mistyping
he could be mistyping
we could be mistyping
you could be mistyping
they could be mistyping	I could have mistyped
you could have mistyped
he could have mistyped
we could have mistyped
you could have mistyped
they could have mistyped	I could have been mistyping
you could have been mistyping
he could have been mistyping
we could have been mistyping
you could have been mistyping
they could have been mistyping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't mistype
you couldn't mistype
he couldn't mistype
we couldn't mistype
you couldn't mistype
they couldn't mistype 	I couldn't be mistyping
you couldn't be mistyping
he couldn't be mistyping
we couldn't be mistyping
you couldn't be mistyping
they couldn't be mistyping	I couldn't have mistyped
you couldn't have mistyped
he couldn't have mistyped
we couldn't have mistyped
you couldn't have mistyped
they couldn't have mistyped	I couldn't have been mistyping
you couldn't have been mistyping
he couldn't have been mistyping
we couldn't have been mistyping
you couldn't have been mistyping
they couldn't have been mistyping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I mistype?
could you mistype?
could he mistype?
could we mistype?
could you mistype?
could they mistype? 	could I be mistyping?
could you be mistyping?
could he be mistyping?
could we be mistyping?
could you be mistyping?
could they be mistyping? 	could I have mistyped?
could you have mistyped?
could he have mistyped?
could we have mistyped?
could you have mistyped?
could they have mistyped? 	could I have been mistyping?
could you have been mistyping?
could he have been mistyping?
could we have been mistyping?
could you have been mistyping?
could they have been mistyping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I mistype?
couldn't you mistype?
couldn't he mistype?
couldn't we mistype?
couldn't you mistype?
couldn't they mistype? 	couldn't I be mistyping?
couldn't you be mistyping?
couldn't he be mistyping?
couldn't we be mistyping?
couldn't you be mistyping?
couldn't they be mistyping? 	couldn't I have mistyped?
couldn't you have mistyped?
couldn't he have mistyped?
couldn't we have mistyped?
couldn't you have mistyped?
couldn't they have mistyped? 	couldn't I have been mistyping?
couldn't you have been mistyping?
couldn't he have been mistyping?
couldn't we have been mistyping?
couldn't you have been mistyping?
couldn't they have been mistyping?