can thwack
Verbo regular: thwack - thwacked- thwacked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can thwack
you can thwack
he can thwack
we can thwack
you can thwack
they can thwack 	I can be thwacking
you can be thwacking
he can be thwacking
we can be thwacking
you can be thwacking
they can be thwacking	I can have thwacked
you can have thwacked
he can have thwacked
we can have thwacked
you can have thwacked
they can have thwacked	I can have been thwacking
you can have been thwacking
he can have been thwacking
we can have been thwacking
you can have been thwacking
they can have been thwacking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't thwack
you can't thwack
he can't thwack
we can't thwack
you can't thwack
they can't thwack 	I can't be thwacking
you can't be thwacking
he can't be thwacking
we can't be thwacking
you can't be thwacking
they can't be thwacking	I can't have thwacked
you can't have thwacked
he can't have thwacked
we can't have thwacked
you can't have thwacked
they can't have thwacked	I can't have been thwacking
you can't have been thwacking
he can't have been thwacking
we can't have been thwacking
you can't have been thwacking
they can't have been thwacking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I thwack?
can you thwack?
can he thwack?
can we thwack?
can you thwack?
can they thwack? 	can I be thwacking?
can you be thwacking?
can he be thwacking?
can we be thwacking?
can you be thwacking?
can they be thwacking? 	can I have thwacked?
can you have thwacked?
can he have thwacked?
can we have thwacked?
can you have thwacked?
can they have thwacked? 	can I have been thwacking?
can you have been thwacking?
can he have been thwacking?
can we have been thwacking?
can you have been thwacking?
can they have been thwacking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I thwack?
can't you thwack?
can't he thwack?
can't we thwack?
can't you thwack?
can't they thwack? 	can't I be thwacking?
can't you be thwacking?
can't he be thwacking?
can't we be thwacking?
can't you be thwacking?
can't they be thwacking? 	can't I have thwacked?
can't you have thwacked?
can't he have thwacked?
can't we have thwacked?
can't you have thwacked?
can't they have thwacked? 	can't I have been thwacking?
can't you have been thwacking?
can't he have been thwacking?
can't we have been thwacking?
can't you have been thwacking?
can't they have been thwacking?