English verb conjugation
CAN YACKETY-YACK

Regular verb: yackety-yack - yackety-yacked - yackety-yacked

Affirmation

Simple form	V-ing form
I can yackety-yack you can yackety-yack he can yackety-yack we can yackety-yack you can yackety-yack they can yackety-yack	I can be yackety-yacking you can be yackety-yacking he can be yackety-yacking we can be yackety-yacking you can be yackety-yacking they can be yackety-yacking
Perfect	V-ing perfect
I can have yackety-yacked you can have yackety-yacked he can have yackety-yacked we can have yackety-yacked you can have yackety-yacked they can have yackety-yacked	I can have been yackety-yacking you can have been yackety-yacking he can have been yackety-yacking we can have been yackety-yacking you can have been yackety-yacking they can have been yackety-yacking

Negation

Simple form	V-ing form
I can't yackety-yack you can't yackety-yack he can't yackety-yack we can't yackety-yack you can't yackety-yack they can't yackety-yack	I can't be yackety-yacking you can't be yackety-yacking he can't be yackety-yacking we can't be yackety-yacking you can't be yackety-yacking they can't be yackety-yacking
Perfect	V-ing perfect
I can't have yackety-yacked you can't have yackety-yacked he can't have yackety-yacked we can't have yackety-yacked you can't have yackety-yacked they can't have yackety-yacked	I can't have been yackety-yacking you can't have been yackety-yacking he can't have been yackety-yacking we can't have been yackety-yacking you can't have been yackety-yacking they can't have been yackety-yacking

Interrogative form

Simple form	V-ing form
can I yackety-yack? can you yackety-yack? can he yackety-yack? can we yackety-yack? can you yackety-yack? can they yackety-yack?	can I be yackety-yacking? can you be yackety-yacking? can he be yackety-yacking? can we be yackety-yacking? can you be yackety-yacking? can they be yackety-yacking?
Perfect	V-ing perfect
can I have yackety-yacked? can you have yackety-yacked? can he have yackety-yacked? can we have yackety-yacked? can you have yackety-yacked? can they have yackety-yacked?	can I have been yackety-yacking? can you have been yackety-yacking? can he have been yackety-yacking? can we have been yackety-yacking? can you have been yackety-yacking? can they have been yackety-yacking?

Interro-negative form

Simple form	V-ing form
can't I yackety-yack? can't you yackety-yack? can't he yackety-yack? can't we yackety-yack? can't you yackety-yack? can't they yackety-yack?	can't I be yackety-yacking? can't you be yackety-yacking? can't he be yackety-yacking? can't we be yackety-yacking? can't you be yackety-yacking? can't they be yackety-yacking?
Perfect	V-ing perfect
can't I have yackety-yacked? can't you have yackety-yacked? can't he have yackety-yacked? can't we have yackety-yacked? can't you have yackety-yacked? can't they have yackety-yacked?	can't I have been yackety-yacking? can't you have been yackety-yacking? can't he have been yackety-yacking? can't we have been yackety-yacking? can't you have been yackety-yacking? can't they have been yackety-yacking?