I could pooh-pooh you could pooh-pooh she could pooh-pooh we could pooh-pooh you could pooh-pooh they could pooh-pooh
V-ing form
I could be pooh-poohing you could be pooh-poohing she could be pooh-poohing we could be pooh-poohing you could be pooh-poohing they could be pooh-poohing
Perfect
I could have pooh-poohed you could have pooh-poohed she could have pooh-poohed we could have pooh-poohed you could have pooh-poohed they could have pooh-poohed
V-ing perfect
I could have been pooh-poohing you could have been pooh-poohing she could have been pooh-poohing we could have been pooh-poohing you could have been pooh-poohing they could have been pooh-poohing
Negation
Simple form
I could not pooh-pooh you could not pooh-pooh she could not pooh-pooh we could not pooh-pooh you could not pooh-pooh they could not pooh-pooh
V-ing form
I could not be pooh-poohing you could not be pooh-poohing she could not be pooh-poohing we could not be pooh-poohing you could not be pooh-poohing they could not be pooh-poohing
Perfect
I could not have pooh-poohed you could not have pooh-poohed she could not have pooh-poohed we could not have pooh-poohed you could not have pooh-poohed they could not have pooh-poohed
V-ing perfect
I could not have been pooh-poohing you could not have been pooh-poohing she could not have been pooh-poohing we could not have been pooh-poohing you could not have been pooh-poohing they could not have been pooh-poohing
Interrogative form
Simple form
could I pooh-pooh? could you pooh-pooh? could she pooh-pooh? could we pooh-pooh? could you pooh-pooh? could they pooh-pooh?
V-ing form
could I be pooh-poohing? could you be pooh-poohing? could she be pooh-poohing? could we be pooh-poohing? could you be pooh-poohing? could they be pooh-poohing?
Perfect
could I have pooh-poohed? could you have pooh-poohed? could she have pooh-poohed? could we have pooh-poohed? could you have pooh-poohed? could they have pooh-poohed?
V-ing perfect
could I have been pooh-poohing? could you have been pooh-poohing? could she have been pooh-poohing? could we have been pooh-poohing? could you have been pooh-poohing? could they have been pooh-poohing?
Interro-negative form
Simple form
could I not pooh-pooh? could you not pooh-pooh? could she not pooh-pooh? could we not pooh-pooh? could you not pooh-pooh? could they not pooh-pooh?
V-ing form
could I not be pooh-poohing? could you not be pooh-poohing? could she not be pooh-poohing? could we not be pooh-poohing? could you not be pooh-poohing? could they not be pooh-poohing?
Perfect
could I not have pooh-poohed? could you not have pooh-poohed? could she not have pooh-poohed? could we not have pooh-poohed? could you not have pooh-poohed? could they not have pooh-poohed?
V-ing perfect
could I not have been pooh-poohing? could you not have been pooh-poohing? could she not have been pooh-poohing? could we not have been pooh-poohing? could you not have been pooh-poohing? could they not have been pooh-poohing?