English verb conjugation
COULD WAIT

Regular verb: wait - waited - waited

Affirmation

Simple form	V-ing form
I could wait you could wait he could wait we could wait you could wait they could wait	I could be waiting you could be waiting he could be waiting we could be waiting you could be waiting they could be waiting
Perfect	V-ing perfect
I could have waited you could have waited he could have waited we could have waited you could have waited they could have waited	I could have been waiting you could have been waiting he could have been waiting we could have been waiting you could have been waiting they could have been waiting

Negation

Simple form	V-ing form
I couldn't wait you couldn't wait he couldn't wait we couldn't wait you couldn't wait they couldn't wait	I couldn't be waiting you couldn't be waiting he couldn't be waiting we couldn't be waiting you couldn't be waiting they couldn't be waiting
Perfect	V-ing perfect
I couldn't have waited you couldn't have waited he couldn't have waited we couldn't have waited you couldn't have waited they couldn't have waited	I couldn't have been waiting you couldn't have been waiting he couldn't have been waiting we couldn't have been waiting you couldn't have been waiting they couldn't have been waiting

Interrogative form

Simple form	V-ing form
could I wait? could you wait? could he wait? could we wait? could you wait? could they wait?	could I be waiting? could you be waiting? could he be waiting? could we be waiting? could you be waiting? could they be waiting?
Perfect	V-ing perfect
could I have waited? could you have waited? could he have waited? could we have waited? could you have waited? could they have waited?	could I have been waiting? could you have been waiting? could he have been waiting? could we have been waiting? could you have been waiting? could they have been waiting?

Interro-negative form

Simple form	V-ing form
couldn't I wait? couldn't you wait? couldn't he wait? couldn't we wait? couldn't you wait? couldn't they wait?	couldn't I be waiting? couldn't you be waiting? couldn't he be waiting? couldn't we be waiting? couldn't you be waiting? couldn't they be waiting?
Perfect	V-ing perfect
couldn't I have waited? couldn't you have waited? couldn't he have waited? couldn't we have waited? couldn't you have waited? couldn't they have waited?	couldn't I have been waiting? couldn't you have been waiting? couldn't he have been waiting? couldn't we have been waiting? couldn't you have been waiting? couldn't they have been waiting?