English verb conjugation
COULD SCUBA-DIVE

Irregular verb: scuba-dive - scuba-dived, scuba-dove - scuba-dived

Affirmation

Simple form	V-ing form
I could scuba-dive you could scuba-dive he could scuba-dive we could scuba-dive you could scuba-dive they could scuba-dive	I could be scuba-diving you could be scuba-diving he could be scuba-diving we could be scuba-diving you could be scuba-diving they could be scuba-diving
Perfect	V-ing perfect
I could have scuba-dived you could have scuba-dived he could have scuba-dived we could have scuba-dived you could have scuba-dived they could have scuba-dived	I could have been scuba-diving you could have been scuba-diving he could have been scuba-diving we could have been scuba-diving you could have been scuba-diving they could have been scuba-diving

Negation

Simple form	V-ing form
I couldn't scuba-dive you couldn't scuba-dive he couldn't scuba-dive we couldn't scuba-dive you couldn't scuba-dive they couldn't scuba-dive	I couldn't be scuba-diving you couldn't be scuba-diving he couldn't be scuba-diving we couldn't be scuba-diving you couldn't be scuba-diving they couldn't be scuba-diving
Perfect	V-ing perfect
I couldn't have scuba-dived you couldn't have scuba-dived he couldn't have scuba-dived we couldn't have scuba-dived you couldn't have scuba-dived they couldn't have scuba-dived	I couldn't have been scuba-diving you couldn't have been scuba-diving he couldn't have been scuba-diving we couldn't have been scuba-diving you couldn't have been scuba-diving they couldn't have been scuba-diving

Interrogative form

Simple form	V-ing form
could I scuba-dive? could you scuba-dive? could he scuba-dive? could we scuba-dive? could you scuba-dive? could they scuba-dive?	could I be scuba-diving? could you be scuba-diving? could he be scuba-diving? could we be scuba-diving? could you be scuba-diving? could they be scuba-diving?
Perfect	V-ing perfect
could I have scuba-dived? could you have scuba-dived? could he have scuba-dived? could we have scuba-dived? could you have scuba-dived? could they have scuba-dived?	could I have been scuba-diving? could you have been scuba-diving? could he have been scuba-diving? could we have been scuba-diving? could you have been scuba-diving? could they have been scuba-diving?

Interro-negative form

Simple form	V-ing form
couldn't I scuba-dive? couldn't you scuba-dive? couldn't he scuba-dive? couldn't we scuba-dive? couldn't you scuba-dive? couldn't they scuba-dive?	couldn't I be scuba-diving? couldn't you be scuba-diving? couldn't he be scuba-diving? couldn't we be scuba-diving? couldn't you be scuba-diving? couldn't they be scuba-diving?
Perfect	V-ing perfect
couldn't I have scuba-dived? couldn't you have scuba-dived? couldn't he have scuba-dived? couldn't we have scuba-dived? couldn't you have scuba-dived? couldn't they have scuba-dived?	couldn't I have been scuba-diving? couldn't you have been scuba-diving? couldn't he have been scuba-diving? couldn't we have been scuba-diving? couldn't you have been scuba-diving? couldn't they have been scuba-diving?