English verb conjugation
CAN YAWP

Regular verb: yawp - yawped - yawped

Affirmation

Simple form	V-ing form
I can yawp you can yawp he can yawp we can yawp you can yawp they can yawp	I can be yawping you can be yawping he can be yawping we can be yawping you can be yawping they can be yawping
Perfect	V-ing perfect
I can have yawped you can have yawped he can have yawped we can have yawped you can have yawped they can have yawped	I can have been yawping you can have been yawping he can have been yawping we can have been yawping you can have been yawping they can have been yawping

Negation

Simple form	V-ing form
I can't yawp you can't yawp he can't yawp we can't yawp you can't yawp they can't yawp	I can't be yawping you can't be yawping he can't be yawping we can't be yawping you can't be yawping they can't be yawping
Perfect	V-ing perfect
I can't have yawped you can't have yawped he can't have yawped we can't have yawped you can't have yawped they can't have yawped	I can't have been yawping you can't have been yawping he can't have been yawping we can't have been yawping you can't have been yawping they can't have been yawping

Interrogative form

Simple form	V-ing form
can I yawp? can you yawp? can he yawp? can we yawp? can you yawp? can they yawp?	can I be yawping? can you be yawping? can he be yawping? can we be yawping? can you be yawping? can they be yawping?
Perfect	V-ing perfect
can I have yawped? can you have yawped? can he have yawped? can we have yawped? can you have yawped? can they have yawped?	can I have been yawping? can you have been yawping? can he have been yawping? can we have been yawping? can you have been yawping? can they have been yawping?

Interro-negative form

Simple form	V-ing form
can't I yawp? can't you yawp? can't he yawp? can't we yawp? can't you yawp? can't they yawp?	can't I be yawping? can't you be yawping? can't he be yawping? can't we be yawping? can't you be yawping? can't they be yawping?
Perfect	V-ing perfect
can't I have yawped? can't you have yawped? can't he have yawped? can't we have yawped? can't you have yawped? can't they have yawped?	can't I have been yawping? can't you have been yawping? can't he have been yawping? can't we have been yawping? can't you have been yawping? can't they have been yawping?