English verb conjugation
COULD KEYBOARD

Regular verb: keyboard - keyboarded - keyboarded

Affirmation

Simple form	V-ing form
I could keyboard you could keyboard she could keyboard we could keyboard you could keyboard they could keyboard	I could be keyboarding you could be keyboarding she could be keyboarding we could be keyboarding you could be keyboarding they could be keyboarding
Perfect	V-ing perfect
I could have keyboarded you could have keyboarded she could have keyboarded we could have keyboarded you could have keyboarded they could have keyboarded	I could have been keyboarding you could have been keyboarding she could have been keyboarding we could have been keyboarding you could have been keyboarding they could have been keyboarding

Negation

Simple form	V-ing form
I couldn't keyboard you couldn't keyboard she couldn't keyboard we couldn't keyboard you couldn't keyboard they couldn't keyboard	I couldn't be keyboarding you couldn't be keyboarding she couldn't be keyboarding we couldn't be keyboarding you couldn't be keyboarding they couldn't be keyboarding
Perfect	V-ing perfect
I couldn't have keyboarded you couldn't have keyboarded she couldn't have keyboarded we couldn't have keyboarded you couldn't have keyboarded they couldn't have keyboarded	I couldn't have been keyboarding you couldn't have been keyboarding she couldn't have been keyboarding we couldn't have been keyboarding you couldn't have been keyboarding they couldn't have been keyboarding

Interrogative form

Simple form	V-ing form
could I keyboard? could you keyboard? could she keyboard? could we keyboard? could you keyboard? could they keyboard?	could I be keyboarding? could you be keyboarding? could she be keyboarding? could we be keyboarding? could you be keyboarding? could they be keyboarding?
Perfect	V-ing perfect
could I have keyboarded? could you have keyboarded? could she have keyboarded? could we have keyboarded? could you have keyboarded? could they have keyboarded?	could I have been keyboarding? could you have been keyboarding? could she have been keyboarding? could we have been keyboarding? could you have been keyboarding? could they have been keyboarding?

Interro-negative form

Simple form	V-ing form
couldn't I keyboard? couldn't you keyboard? couldn't she keyboard? couldn't we keyboard? couldn't you keyboard? couldn't they keyboard?	couldn't I be keyboarding? couldn't you be keyboarding? couldn't she be keyboarding? couldn't we be keyboarding? couldn't you be keyboarding? couldn't they be keyboarding?
Perfect	V-ing perfect
couldn't I have keyboarded? couldn't you have keyboarded? couldn't she have keyboarded? couldn't we have keyboarded? couldn't you have keyboarded? couldn't they have keyboarded?	couldn't I have been keyboarding? couldn't you have been keyboarding? couldn't she have been keyboarding? couldn't we have been keyboarding? couldn't you have been keyboarding? couldn't they have been keyboarding?