I could acquiesce you could acquiesce he could acquiesce we could acquiesce you could acquiesce they could acquiesce
V-ing form
I could be acquiescing you could be acquiescing he could be acquiescing we could be acquiescing you could be acquiescing they could be acquiescing
Perfect
I could have acquiesced you could have acquiesced he could have acquiesced we could have acquiesced you could have acquiesced they could have acquiesced
V-ing perfect
I could have been acquiescing you could have been acquiescing he could have been acquiescing we could have been acquiescing you could have been acquiescing they could have been acquiescing
Negation
Simple form
I couldn't acquiesce you couldn't acquiesce he couldn't acquiesce we couldn't acquiesce you couldn't acquiesce they couldn't acquiesce
V-ing form
I couldn't be acquiescing you couldn't be acquiescing he couldn't be acquiescing we couldn't be acquiescing you couldn't be acquiescing they couldn't be acquiescing
Perfect
I couldn't have acquiesced you couldn't have acquiesced he couldn't have acquiesced we couldn't have acquiesced you couldn't have acquiesced they couldn't have acquiesced
V-ing perfect
I couldn't have been acquiescing you couldn't have been acquiescing he couldn't have been acquiescing we couldn't have been acquiescing you couldn't have been acquiescing they couldn't have been acquiescing
Interrogative form
Simple form
could I acquiesce? could you acquiesce? could he acquiesce? could we acquiesce? could you acquiesce? could they acquiesce?
V-ing form
could I be acquiescing? could you be acquiescing? could he be acquiescing? could we be acquiescing? could you be acquiescing? could they be acquiescing?
Perfect
could I have acquiesced? could you have acquiesced? could he have acquiesced? could we have acquiesced? could you have acquiesced? could they have acquiesced?
V-ing perfect
could I have been acquiescing? could you have been acquiescing? could he have been acquiescing? could we have been acquiescing? could you have been acquiescing? could they have been acquiescing?
Interro-negative form
Simple form
couldn't I acquiesce? couldn't you acquiesce? couldn't he acquiesce? couldn't we acquiesce? couldn't you acquiesce? couldn't they acquiesce?
V-ing form
couldn't I be acquiescing? couldn't you be acquiescing? couldn't he be acquiescing? couldn't we be acquiescing? couldn't you be acquiescing? couldn't they be acquiescing?
Perfect
couldn't I have acquiesced? couldn't you have acquiesced? couldn't he have acquiesced? couldn't we have acquiesced? couldn't you have acquiesced? couldn't they have acquiesced?
V-ing perfect
couldn't I have been acquiescing? couldn't you have been acquiescing? couldn't he have been acquiescing? couldn't we have been acquiescing? couldn't you have been acquiescing? couldn't they have been acquiescing?