English verb conjugation
COULD REINFORCE

Regular verb: reinforce - reinforced - reinforced

Affirmation

Simple form	V-ing form
I could reinforce you could reinforce he could reinforce we could reinforce you could reinforce they could reinforce	I could be reinforcing you could be reinforcing he could be reinforcing we could be reinforcing you could be reinforcing they could be reinforcing
Perfect	V-ing perfect
I could have reinforced you could have reinforced he could have reinforced we could have reinforced you could have reinforced they could have reinforced	I could have been reinforcing you could have been reinforcing he could have been reinforcing we could have been reinforcing you could have been reinforcing they could have been reinforcing

Negation

Simple form	V-ing form
I couldn't reinforce you couldn't reinforce he couldn't reinforce we couldn't reinforce you couldn't reinforce they couldn't reinforce	I couldn't be reinforcing you couldn't be reinforcing he couldn't be reinforcing we couldn't be reinforcing you couldn't be reinforcing they couldn't be reinforcing
Perfect	V-ing perfect
I couldn't have reinforced you couldn't have reinforced he couldn't have reinforced we couldn't have reinforced you couldn't have reinforced they couldn't have reinforced	I couldn't have been reinforcing you couldn't have been reinforcing he couldn't have been reinforcing we couldn't have been reinforcing you couldn't have been reinforcing they couldn't have been reinforcing

Interrogative form

Simple form	V-ing form
could I reinforce? could you reinforce? could he reinforce? could we reinforce? could you reinforce? could they reinforce?	could I be reinforcing? could you be reinforcing? could he be reinforcing? could we be reinforcing? could you be reinforcing? could they be reinforcing?
Perfect	V-ing perfect
could I have reinforced? could you have reinforced? could he have reinforced? could we have reinforced? could you have reinforced? could they have reinforced?	could I have been reinforcing? could you have been reinforcing? could he have been reinforcing? could we have been reinforcing? could you have been reinforcing? could they have been reinforcing?

Interro-negative form

Simple form	V-ing form
couldn't I reinforce? couldn't you reinforce? couldn't he reinforce? couldn't we reinforce? couldn't you reinforce? couldn't they reinforce?	couldn't I be reinforcing? couldn't you be reinforcing? couldn't he be reinforcing? couldn't we be reinforcing? couldn't you be reinforcing? couldn't they be reinforcing?
Perfect	V-ing perfect
couldn't I have reinforced? couldn't you have reinforced? couldn't he have reinforced? couldn't we have reinforced? couldn't you have reinforced? couldn't they have reinforced?	couldn't I have been reinforcing? couldn't you have been reinforcing? couldn't he have been reinforcing? couldn't we have been reinforcing? couldn't you have been reinforcing? couldn't they have been reinforcing?