English verb conjugation
CAN THUD

Regular verb: thud - thudded - thudded

Affirmation

Simple form	V-ing form
I can thud you can thud she can thud we can thud you can thud they can thud	I can be thudding you can be thudding she can be thudding we can be thudding you can be thudding they can be thudding
Perfect	V-ing perfect
I can have thudded you can have thudded she can have thudded we can have thudded you can have thudded they can have thudded	I can have been thudding you can have been thudding she can have been thudding we can have been thudding you can have been thudding they can have been thudding

Negation

Simple form	V-ing form
I cannot thud you cannot thud she cannot thud we cannot thud you cannot thud they cannot thud	I cannot be thudding you cannot be thudding she cannot be thudding we cannot be thudding you cannot be thudding they cannot be thudding
Perfect	V-ing perfect
I cannot have thudded you cannot have thudded she cannot have thudded we cannot have thudded you cannot have thudded they cannot have thudded	I cannot have been thudding you cannot have been thudding she cannot have been thudding we cannot have been thudding you cannot have been thudding they cannot have been thudding

Interrogative form

Simple form	V-ing form
can I thud? can you thud? can she thud? can we thud? can you thud? can they thud?	can I be thudding? can you be thudding? can she be thudding? can we be thudding? can you be thudding? can they be thudding?
Perfect	V-ing perfect
can I have thudded? can you have thudded? can she have thudded? can we have thudded? can you have thudded? can they have thudded?	can I have been thudding? can you have been thudding? can she have been thudding? can we have been thudding? can you have been thudding? can they have been thudding?

Interro-negative form

Simple form	V-ing form
can I not thud? can you not thud? can she not thud? can we not thud? can you not thud? can they not thud?	can I not be thudding? can you not be thudding? can she not be thudding? can we not be thudding? can you not be thudding? can they not be thudding?
Perfect	V-ing perfect
can I not have thudded? can you not have thudded? can she not have thudded? can we not have thudded? can you not have thudded? can they not have thudded?	can I not have been thudding? can you not have been thudding? can she not have been thudding? can we not have been thudding? can you not have been thudding? can they not have been thudding?