English verb conjugation
COULD UNTUCK

Regular verb: untuck - untucked - untucked

Affirmation

Simple form	V-ing form
I could untuck you could untuck he could untuck we could untuck you could untuck they could untuck	I could be untucking you could be untucking he could be untucking we could be untucking you could be untucking they could be untucking
Perfect	V-ing perfect
I could have untucked you could have untucked he could have untucked we could have untucked you could have untucked they could have untucked	I could have been untucking you could have been untucking he could have been untucking we could have been untucking you could have been untucking they could have been untucking

Negation

Simple form	V-ing form
I couldn't untuck you couldn't untuck he couldn't untuck we couldn't untuck you couldn't untuck they couldn't untuck	I couldn't be untucking you couldn't be untucking he couldn't be untucking we couldn't be untucking you couldn't be untucking they couldn't be untucking
Perfect	V-ing perfect
I couldn't have untucked you couldn't have untucked he couldn't have untucked we couldn't have untucked you couldn't have untucked they couldn't have untucked	I couldn't have been untucking you couldn't have been untucking he couldn't have been untucking we couldn't have been untucking you couldn't have been untucking they couldn't have been untucking

Interrogative form

Simple form	V-ing form
could I untuck? could you untuck? could he untuck? could we untuck? could you untuck? could they untuck?	could I be untucking? could you be untucking? could he be untucking? could we be untucking? could you be untucking? could they be untucking?
Perfect	V-ing perfect
could I have untucked? could you have untucked? could he have untucked? could we have untucked? could you have untucked? could they have untucked?	could I have been untucking? could you have been untucking? could he have been untucking? could we have been untucking? could you have been untucking? could they have been untucking?

Interro-negative form

Simple form	V-ing form
couldn't I untuck? couldn't you untuck? couldn't he untuck? couldn't we untuck? couldn't you untuck? couldn't they untuck?	couldn't I be untucking? couldn't you be untucking? couldn't he be untucking? couldn't we be untucking? couldn't you be untucking? couldn't they be untucking?
Perfect	V-ing perfect
couldn't I have untucked? couldn't you have untucked? couldn't he have untucked? couldn't we have untucked? couldn't you have untucked? couldn't they have untucked?	couldn't I have been untucking? couldn't you have been untucking? couldn't he have been untucking? couldn't we have been untucking? couldn't you have been untucking? couldn't they have been untucking?