could fart
Regular verb: fart - farted- farted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fart
you could fart
he could fart
we could fart
you could fart
they could fart 	I could be farting
you could be farting
he could be farting
we could be farting
you could be farting
they could be farting	I could have farted
you could have farted
he could have farted
we could have farted
you could have farted
they could have farted	I could have been farting
you could have been farting
he could have been farting
we could have been farting
you could have been farting
they could have been farting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't fart
you couldn't fart
he couldn't fart
we couldn't fart
you couldn't fart
they couldn't fart 	I couldn't be farting
you couldn't be farting
he couldn't be farting
we couldn't be farting
you couldn't be farting
they couldn't be farting	I couldn't have farted
you couldn't have farted
he couldn't have farted
we couldn't have farted
you couldn't have farted
they couldn't have farted	I couldn't have been farting
you couldn't have been farting
he couldn't have been farting
we couldn't have been farting
you couldn't have been farting
they couldn't have been farting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fart?
could you fart?
could he fart?
could we fart?
could you fart?
could they fart? 	could I be farting?
could you be farting?
could he be farting?
could we be farting?
could you be farting?
could they be farting? 	could I have farted?
could you have farted?
could he have farted?
could we have farted?
could you have farted?
could they have farted? 	could I have been farting?
could you have been farting?
could he have been farting?
could we have been farting?
could you have been farting?
could they have been farting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I fart?
couldn't you fart?
couldn't he fart?
couldn't we fart?
couldn't you fart?
couldn't they fart? 	couldn't I be farting?
couldn't you be farting?
couldn't he be farting?
couldn't we be farting?
couldn't you be farting?
couldn't they be farting? 	couldn't I have farted?
couldn't you have farted?
couldn't he have farted?
couldn't we have farted?
couldn't you have farted?
couldn't they have farted? 	couldn't I have been farting?
couldn't you have been farting?
couldn't he have been farting?
couldn't we have been farting?
couldn't you have been farting?
couldn't they have been farting?