English verb conjugation
COULD YACKETY-YAK

Regular verb: yackety-yak - yackety-yaked - yackety-yaked

Affirmation

Simple form	V-ing form
I could yackety-yak you could yackety-yak he could yackety-yak we could yackety-yak you could yackety-yak they could yackety-yak	I could be yackety-yaking you could be yackety-yaking he could be yackety-yaking we could be yackety-yaking you could be yackety-yaking they could be yackety-yaking
Perfect	V-ing perfect
I could have yackety-yaked you could have yackety-yaked he could have yackety-yaked we could have yackety-yaked you could have yackety-yaked they could have yackety-yaked	I could have been yackety-yaking you could have been yackety-yaking he could have been yackety-yaking we could have been yackety-yaking you could have been yackety-yaking they could have been yackety-yaking

Negation

Simple form	V-ing form
I couldn't yackety-yak you couldn't yackety-yak he couldn't yackety-yak we couldn't yackety-yak you couldn't yackety-yak they couldn't yackety-yak	I couldn't be yackety-yaking you couldn't be yackety-yaking he couldn't be yackety-yaking we couldn't be yackety-yaking you couldn't be yackety-yaking they couldn't be yackety-yaking
Perfect	V-ing perfect
I couldn't have yackety-yaked you couldn't have yackety-yaked he couldn't have yackety-yaked we couldn't have yackety-yaked you couldn't have yackety-yaked they couldn't have yackety-yaked	I couldn't have been yackety-yaking you couldn't have been yackety-yaking he couldn't have been yackety-yaking we couldn't have been yackety-yaking you couldn't have been yackety-yaking they couldn't have been yackety-yaking

Interrogative form

Simple form	V-ing form
could I yackety-yak? could you yackety-yak? could he yackety-yak? could we yackety-yak? could you yackety-yak? could they yackety-yak?	could I be yackety-yaking? could you be yackety-yaking? could he be yackety-yaking? could we be yackety-yaking? could you be yackety-yaking? could they be yackety-yaking?
Perfect	V-ing perfect
could I have yackety-yaked? could you have yackety-yaked? could he have yackety-yaked? could we have yackety-yaked? could you have yackety-yaked? could they have yackety-yaked?	could I have been yackety-yaking? could you have been yackety-yaking? could he have been yackety-yaking? could we have been yackety-yaking? could you have been yackety-yaking? could they have been yackety-yaking?

Interro-negative form

Simple form	V-ing form
couldn't I yackety-yak? couldn't you yackety-yak? couldn't he yackety-yak? couldn't we yackety-yak? couldn't you yackety-yak? couldn't they yackety-yak?	couldn't I be yackety-yaking? couldn't you be yackety-yaking? couldn't he be yackety-yaking? couldn't we be yackety-yaking? couldn't you be yackety-yaking? couldn't they be yackety-yaking?
Perfect	V-ing perfect
couldn't I have yackety-yaked? couldn't you have yackety-yaked? couldn't he have yackety-yaked? couldn't we have yackety-yaked? couldn't you have yackety-yaked? couldn't they have yackety-yaked?	couldn't I have been yackety-yaking? couldn't you have been yackety-yaking? couldn't he have been yackety-yaking? couldn't we have been yackety-yaking? couldn't you have been yackety-yaking? couldn't they have been yackety-yaking?