English verb conjugation
CAN THANK

Regular verb: thank - thanked - thanked

Affirmation

Simple form	V-ing form
I can thank you can thank he can thank we can thank you can thank they can thank	I can be thanking you can be thanking he can be thanking we can be thanking you can be thanking they can be thanking
Perfect	V-ing perfect
I can have thanked you can have thanked he can have thanked we can have thanked you can have thanked they can have thanked	I can have been thanking you can have been thanking he can have been thanking we can have been thanking you can have been thanking they can have been thanking

Negation

Simple form	V-ing form
I can't thank you can't thank he can't thank we can't thank you can't thank they can't thank	I can't be thanking you can't be thanking he can't be thanking we can't be thanking you can't be thanking they can't be thanking
Perfect	V-ing perfect
I can't have thanked you can't have thanked he can't have thanked we can't have thanked you can't have thanked they can't have thanked	I can't have been thanking you can't have been thanking he can't have been thanking we can't have been thanking you can't have been thanking they can't have been thanking

Interrogative form

Simple form	V-ing form
can I thank? can you thank? can he thank? can we thank? can you thank? can they thank?	can I be thanking? can you be thanking? can he be thanking? can we be thanking? can you be thanking? can they be thanking?
Perfect	V-ing perfect
can I have thanked? can you have thanked? can he have thanked? can we have thanked? can you have thanked? can they have thanked?	can I have been thanking? can you have been thanking? can he have been thanking? can we have been thanking? can you have been thanking? can they have been thanking?

Interro-negative form

Simple form	V-ing form
can't I thank? can't you thank? can't he thank? can't we thank? can't you thank? can't they thank?	can't I be thanking? can't you be thanking? can't he be thanking? can't we be thanking? can't you be thanking? can't they be thanking?
Perfect	V-ing perfect
can't I have thanked? can't you have thanked? can't he have thanked? can't we have thanked? can't you have thanked? can't they have thanked?	can't I have been thanking? can't you have been thanking? can't he have been thanking? can't we have been thanking? can't you have been thanking? can't they have been thanking?