English verb conjugation
COULD FUCK

Regular verb: fuck - fucked - fucked

Affirmation

Simple form	V-ing form
I could fuck you could fuck he could fuck we could fuck you could fuck they could fuck	I could be fucking you could be fucking he could be fucking we could be fucking you could be fucking they could be fucking
Perfect	V-ing perfect
I could have fucked you could have fucked he could have fucked we could have fucked you could have fucked they could have fucked	I could have been fucking you could have been fucking he could have been fucking we could have been fucking you could have been fucking they could have been fucking

Negation

Simple form	V-ing form
I couldn't fuck you couldn't fuck he couldn't fuck we couldn't fuck you couldn't fuck they couldn't fuck	I couldn't be fucking you couldn't be fucking he couldn't be fucking we couldn't be fucking you couldn't be fucking they couldn't be fucking
Perfect	V-ing perfect
I couldn't have fucked you couldn't have fucked he couldn't have fucked we couldn't have fucked you couldn't have fucked they couldn't have fucked	I couldn't have been fucking you couldn't have been fucking he couldn't have been fucking we couldn't have been fucking you couldn't have been fucking they couldn't have been fucking

Interrogative form

Simple form	V-ing form
could I fuck? could you fuck? could he fuck? could we fuck? could you fuck? could they fuck?	could I be fucking? could you be fucking? could he be fucking? could we be fucking? could you be fucking? could they be fucking?
Perfect	V-ing perfect
could I have fucked? could you have fucked? could he have fucked? could we have fucked? could you have fucked? could they have fucked?	could I have been fucking? could you have been fucking? could he have been fucking? could we have been fucking? could you have been fucking? could they have been fucking?

Interro-negative form

Simple form	V-ing form
couldn't I fuck? couldn't you fuck? couldn't he fuck? couldn't we fuck? couldn't you fuck? couldn't they fuck?	couldn't I be fucking? couldn't you be fucking? couldn't he be fucking? couldn't we be fucking? couldn't you be fucking? couldn't they be fucking?
Perfect	V-ing perfect
couldn't I have fucked? couldn't you have fucked? couldn't he have fucked? couldn't we have fucked? couldn't you have fucked? couldn't they have fucked?	couldn't I have been fucking? couldn't you have been fucking? couldn't he have been fucking? couldn't we have been fucking? couldn't you have been fucking? couldn't they have been fucking?