English verb conjugation
COULD DEVOLVE

Regular verb: devolve - devolved - devolved

Affirmation

Simple form	V-ing form
I could devolve you could devolve he could devolve we could devolve you could devolve they could devolve	I could be devolving you could be devolving he could be devolving we could be devolving you could be devolving they could be devolving
Perfect	V-ing perfect
I could have devolved you could have devolved he could have devolved we could have devolved you could have devolved they could have devolved	I could have been devolving you could have been devolving he could have been devolving we could have been devolving you could have been devolving they could have been devolving

Negation

Simple form	V-ing form
I couldn't devolve you couldn't devolve he couldn't devolve we couldn't devolve you couldn't devolve they couldn't devolve	I couldn't be devolving you couldn't be devolving he couldn't be devolving we couldn't be devolving you couldn't be devolving they couldn't be devolving
Perfect	V-ing perfect
I couldn't have devolved you couldn't have devolved he couldn't have devolved we couldn't have devolved you couldn't have devolved they couldn't have devolved	I couldn't have been devolving you couldn't have been devolving he couldn't have been devolving we couldn't have been devolving you couldn't have been devolving they couldn't have been devolving

Interrogative form

Simple form	V-ing form
could I devolve? could you devolve? could he devolve? could we devolve? could you devolve? could they devolve?	could I be devolving? could you be devolving? could he be devolving? could we be devolving? could you be devolving? could they be devolving?
Perfect	V-ing perfect
could I have devolved? could you have devolved? could he have devolved? could we have devolved? could you have devolved? could they have devolved?	could I have been devolving? could you have been devolving? could he have been devolving? could we have been devolving? could you have been devolving? could they have been devolving?

Interro-negative form

Simple form	V-ing form
couldn't I devolve? couldn't you devolve? couldn't he devolve? couldn't we devolve? couldn't you devolve? couldn't they devolve?	couldn't I be devolving? couldn't you be devolving? couldn't he be devolving? couldn't we be devolving? couldn't you be devolving? couldn't they be devolving?
Perfect	V-ing perfect
couldn't I have devolved? couldn't you have devolved? couldn't he have devolved? couldn't we have devolved? couldn't you have devolved? couldn't they have devolved?	couldn't I have been devolving? couldn't you have been devolving? couldn't he have been devolving? couldn't we have been devolving? couldn't you have been devolving? couldn't they have been devolving?