English verb conjugation
COULD RIPPLE

Regular verb: ripple - rippled - rippled

Affirmation

Simple form	V-ing form
I could ripple you could ripple he could ripple we could ripple you could ripple they could ripple	I could be rippling you could be rippling he could be rippling we could be rippling you could be rippling they could be rippling
Perfect	V-ing perfect
I could have rippled you could have rippled he could have rippled we could have rippled you could have rippled they could have rippled	I could have been rippling you could have been rippling he could have been rippling we could have been rippling you could have been rippling they could have been rippling

Negation

Simple form	V-ing form
I couldn't ripple you couldn't ripple he couldn't ripple we couldn't ripple you couldn't ripple they couldn't ripple	I couldn't be rippling you couldn't be rippling he couldn't be rippling we couldn't be rippling you couldn't be rippling they couldn't be rippling
Perfect	V-ing perfect
I couldn't have rippled you couldn't have rippled he couldn't have rippled we couldn't have rippled you couldn't have rippled they couldn't have rippled	I couldn't have been rippling you couldn't have been rippling he couldn't have been rippling we couldn't have been rippling you couldn't have been rippling they couldn't have been rippling

Interrogative form

Simple form	V-ing form
could I ripple? could you ripple? could he ripple? could we ripple? could you ripple? could they ripple?	could I be rippling? could you be rippling? could he be rippling? could we be rippling? could you be rippling? could they be rippling?
Perfect	V-ing perfect
could I have rippled? could you have rippled? could he have rippled? could we have rippled? could you have rippled? could they have rippled?	could I have been rippling? could you have been rippling? could he have been rippling? could we have been rippling? could you have been rippling? could they have been rippling?

Interro-negative form

Simple form	V-ing form
couldn't I ripple? couldn't you ripple? couldn't he ripple? couldn't we ripple? couldn't you ripple? couldn't they ripple?	couldn't I be rippling? couldn't you be rippling? couldn't he be rippling? couldn't we be rippling? couldn't you be rippling? couldn't they be rippling?
Perfect	V-ing perfect
couldn't I have rippled? couldn't you have rippled? couldn't he have rippled? couldn't we have rippled? couldn't you have rippled? couldn't they have rippled?	couldn't I have been rippling? couldn't you have been rippling? couldn't he have been rippling? couldn't we have been rippling? couldn't you have been rippling? couldn't they have been rippling?