English verb conjugation
COULD TYPE

Regular verb: type - typed - typed

Affirmation

Simple form	V-ing form
I could type you could type he could type we could type you could type they could type	I could be typing you could be typing he could be typing we could be typing you could be typing they could be typing
Perfect	V-ing perfect
I could have typed you could have typed he could have typed we could have typed you could have typed they could have typed	I could have been typing you could have been typing he could have been typing we could have been typing you could have been typing they could have been typing

Negation

Simple form	V-ing form
I could not type you could not type he could not type we could not type you could not type they could not type	I could not be typing you could not be typing he could not be typing we could not be typing you could not be typing they could not be typing
Perfect	V-ing perfect
I could not have typed you could not have typed he could not have typed we could not have typed you could not have typed they could not have typed	I could not have been typing you could not have been typing he could not have been typing we could not have been typing you could not have been typing they could not have been typing

Interrogative form

Simple form	V-ing form
could I type? could you type? could he type? could we type? could you type? could they type?	could I be typing? could you be typing? could he be typing? could we be typing? could you be typing? could they be typing?
Perfect	V-ing perfect
could I have typed? could you have typed? could he have typed? could we have typed? could you have typed? could they have typed?	could I have been typing? could you have been typing? could he have been typing? could we have been typing? could you have been typing? could they have been typing?

Interro-negative form

Simple form	V-ing form
could I not type? could you not type? could he not type? could we not type? could you not type? could they not type?	could I not be typing? could you not be typing? could he not be typing? could we not be typing? could you not be typing? could they not be typing?
Perfect	V-ing perfect
could I not have typed? could you not have typed? could he not have typed? could we not have typed? could you not have typed? could they not have typed?	could I not have been typing? could you not have been typing? could he not have been typing? could we not have been typing? could you not have been typing? could they not have been typing?