English verb conjugation
COULD THAW

Regular verb: thaw - thawed - thawed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?