English verb conjugation
COULD ROACH

Regular verb: roach - roached - roached

Affirmation

Simple form	V-ing form
I could roach you could roach he could roach we could roach you could roach they could roach	I could be roaching you could be roaching he could be roaching we could be roaching you could be roaching they could be roaching
Perfect	V-ing perfect
I could have roached you could have roached he could have roached we could have roached you could have roached they could have roached	I could have been roaching you could have been roaching he could have been roaching we could have been roaching you could have been roaching they could have been roaching

Negation

Simple form	V-ing form
I couldn't roach you couldn't roach he couldn't roach we couldn't roach you couldn't roach they couldn't roach	I couldn't be roaching you couldn't be roaching he couldn't be roaching we couldn't be roaching you couldn't be roaching they couldn't be roaching
Perfect	V-ing perfect
I couldn't have roached you couldn't have roached he couldn't have roached we couldn't have roached you couldn't have roached they couldn't have roached	I couldn't have been roaching you couldn't have been roaching he couldn't have been roaching we couldn't have been roaching you couldn't have been roaching they couldn't have been roaching

Interrogative form

Simple form	V-ing form
could I roach? could you roach? could he roach? could we roach? could you roach? could they roach?	could I be roaching? could you be roaching? could he be roaching? could we be roaching? could you be roaching? could they be roaching?
Perfect	V-ing perfect
could I have roached? could you have roached? could he have roached? could we have roached? could you have roached? could they have roached?	could I have been roaching? could you have been roaching? could he have been roaching? could we have been roaching? could you have been roaching? could they have been roaching?

Interro-negative form

Simple form	V-ing form
couldn't I roach? couldn't you roach? couldn't he roach? couldn't we roach? couldn't you roach? couldn't they roach?	couldn't I be roaching? couldn't you be roaching? couldn't he be roaching? couldn't we be roaching? couldn't you be roaching? couldn't they be roaching?
Perfect	V-ing perfect
couldn't I have roached? couldn't you have roached? couldn't he have roached? couldn't we have roached? couldn't you have roached? couldn't they have roached?	couldn't I have been roaching? couldn't you have been roaching? couldn't he have been roaching? couldn't we have been roaching? couldn't you have been roaching? couldn't they have been roaching?