could thaw
Regular verb: thaw - thawed- thawed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could thaw
you could thaw
he could thaw
we could thaw
you could thaw
they could thaw 	I could be thawing
you could be thawing
he could be thawing
we could be thawing
you could be thawing
they could be thawing	I could have thawed
you could have thawed
he could have thawed
we could have thawed
you could have thawed
they could have thawed	I could have been thawing
you could have been thawing
he could have been thawing
we could have been thawing
you could have been thawing
they could have been thawing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't thaw
you couldn't thaw
he couldn't thaw
we couldn't thaw
you couldn't thaw
they couldn't thaw 	I couldn't be thawing
you couldn't be thawing
he couldn't be thawing
we couldn't be thawing
you couldn't be thawing
they couldn't be thawing	I couldn't have thawed
you couldn't have thawed
he couldn't have thawed
we couldn't have thawed
you couldn't have thawed
they couldn't have thawed	I couldn't have been thawing
you couldn't have been thawing
he couldn't have been thawing
we couldn't have been thawing
you couldn't have been thawing
they couldn't have been thawing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I thaw?
could you thaw?
could he thaw?
could we thaw?
could you thaw?
could they thaw? 	could I be thawing?
could you be thawing?
could he be thawing?
could we be thawing?
could you be thawing?
could they be thawing? 	could I have thawed?
could you have thawed?
could he have thawed?
could we have thawed?
could you have thawed?
could they have thawed? 	could I have been thawing?
could you have been thawing?
could he have been thawing?
could we have been thawing?
could you have been thawing?
could they have been thawing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I thaw?
couldn't you thaw?
couldn't he thaw?
couldn't we thaw?
couldn't you thaw?
couldn't they thaw? 	couldn't I be thawing?
couldn't you be thawing?
couldn't he be thawing?
couldn't we be thawing?
couldn't you be thawing?
couldn't they be thawing? 	couldn't I have thawed?
couldn't you have thawed?
couldn't he have thawed?
couldn't we have thawed?
couldn't you have thawed?
couldn't they have thawed? 	couldn't I have been thawing?
couldn't you have been thawing?
couldn't he have been thawing?
couldn't we have been thawing?
couldn't you have been thawing?
couldn't they have been thawing?