English verb conjugation
COULD UNCLASP

Regular verb: unclasp - unclasped - unclasped

Affirmation

Simple form	V-ing form
I could unclasp you could unclasp he could unclasp we could unclasp you could unclasp they could unclasp	I could be unclasping you could be unclasping he could be unclasping we could be unclasping you could be unclasping they could be unclasping
Perfect	V-ing perfect
I could have unclasped you could have unclasped he could have unclasped we could have unclasped you could have unclasped they could have unclasped	I could have been unclasping you could have been unclasping he could have been unclasping we could have been unclasping you could have been unclasping they could have been unclasping

Negation

Simple form	V-ing form
I couldn't unclasp you couldn't unclasp he couldn't unclasp we couldn't unclasp you couldn't unclasp they couldn't unclasp	I couldn't be unclasping you couldn't be unclasping he couldn't be unclasping we couldn't be unclasping you couldn't be unclasping they couldn't be unclasping
Perfect	V-ing perfect
I couldn't have unclasped you couldn't have unclasped he couldn't have unclasped we couldn't have unclasped you couldn't have unclasped they couldn't have unclasped	I couldn't have been unclasping you couldn't have been unclasping he couldn't have been unclasping we couldn't have been unclasping you couldn't have been unclasping they couldn't have been unclasping

Interrogative form

Simple form	V-ing form
could I unclasp? could you unclasp? could he unclasp? could we unclasp? could you unclasp? could they unclasp?	could I be unclasping? could you be unclasping? could he be unclasping? could we be unclasping? could you be unclasping? could they be unclasping?
Perfect	V-ing perfect
could I have unclasped? could you have unclasped? could he have unclasped? could we have unclasped? could you have unclasped? could they have unclasped?	could I have been unclasping? could you have been unclasping? could he have been unclasping? could we have been unclasping? could you have been unclasping? could they have been unclasping?

Interro-negative form

Simple form	V-ing form
couldn't I unclasp? couldn't you unclasp? couldn't he unclasp? couldn't we unclasp? couldn't you unclasp? couldn't they unclasp?	couldn't I be unclasping? couldn't you be unclasping? couldn't he be unclasping? couldn't we be unclasping? couldn't you be unclasping? couldn't they be unclasping?
Perfect	V-ing perfect
couldn't I have unclasped? couldn't you have unclasped? couldn't he have unclasped? couldn't we have unclasped? couldn't you have unclasped? couldn't they have unclasped?	couldn't I have been unclasping? couldn't you have been unclasping? couldn't he have been unclasping? couldn't we have been unclasping? couldn't you have been unclasping? couldn't they have been unclasping?