English verb conjugation
COULD SWEAR

Irregular verb: swear - swore - sworn

Affirmation

Simple form	V-ing form
I could swear you could swear he could swear we could swear you could swear they could swear	I could be swearing you could be swearing he could be swearing we could be swearing you could be swearing they could be swearing
Perfect	V-ing perfect
I could have sworn you could have sworn he could have sworn we could have sworn you could have sworn they could have sworn	I could have been swearing you could have been swearing he could have been swearing we could have been swearing you could have been swearing they could have been swearing

Negation

Simple form	V-ing form
I couldn't swear you couldn't swear he couldn't swear we couldn't swear you couldn't swear they couldn't swear	I couldn't be swearing you couldn't be swearing he couldn't be swearing we couldn't be swearing you couldn't be swearing they couldn't be swearing
Perfect	V-ing perfect
I couldn't have sworn you couldn't have sworn he couldn't have sworn we couldn't have sworn you couldn't have sworn they couldn't have sworn	I couldn't have been swearing you couldn't have been swearing he couldn't have been swearing we couldn't have been swearing you couldn't have been swearing they couldn't have been swearing

Interrogative form

Simple form	V-ing form
could I swear? could you swear? could he swear? could we swear? could you swear? could they swear?	could I be swearing? could you be swearing? could he be swearing? could we be swearing? could you be swearing? could they be swearing?
Perfect	V-ing perfect
could I have sworn? could you have sworn? could he have sworn? could we have sworn? could you have sworn? could they have sworn?	could I have been swearing? could you have been swearing? could he have been swearing? could we have been swearing? could you have been swearing? could they have been swearing?

Interro-negative form

Simple form	V-ing form
couldn't I swear? couldn't you swear? couldn't he swear? couldn't we swear? couldn't you swear? couldn't they swear?	couldn't I be swearing? couldn't you be swearing? couldn't he be swearing? couldn't we be swearing? couldn't you be swearing? couldn't they be swearing?
Perfect	V-ing perfect
couldn't I have sworn? couldn't you have sworn? couldn't he have sworn? couldn't we have sworn? couldn't you have sworn? couldn't they have sworn?	couldn't I have been swearing? couldn't you have been swearing? couldn't he have been swearing? couldn't we have been swearing? couldn't you have been swearing? couldn't they have been swearing?