English verb conjugation
SHOULD COUNTERMARCH

Regular verb: countermarch - countermarched - countermarched

Affirmation

Simple form	V-ing form
I'd countermarch you'd countermarch she'd countermarch we'd countermarch you'd countermarch they'd countermarch	I'd be countermarching you'd be countermarching she'd be countermarching we'd be countermarching you'd be countermarching they'd be countermarching
Perfect	V-ing perfect
I should've countermarched you should've countermarched she should've countermarched we should've countermarched you should've countermarched they should've countermarched	I should've been countermarching you should've been countermarching she should've been countermarching we should've been countermarching you should've been countermarching they should've been countermarching

Negation

Simple form	V-ing form
I shouldn't countermarch you shouldn't countermarch she shouldn't countermarch we shouldn't countermarch you shouldn't countermarch they shouldn't countermarch	I shouldn't be countermarching you shouldn't be countermarching she shouldn't be countermarching we shouldn't be countermarching you shouldn't be countermarching they shouldn't be countermarching
Perfect	V-ing perfect
I shouldn't have countermarched you shouldn't have countermarched she shouldn't have countermarched we shouldn't have countermarched you shouldn't have countermarched they shouldn't have countermarched	I shouldn't have been countermarching you shouldn't have been countermarching she shouldn't have been countermarching we shouldn't have been countermarching you shouldn't have been countermarching they shouldn't have been countermarching

Interrogative form

Simple form	V-ing form
should I countermarch? should you countermarch? should she countermarch? should we countermarch? should you countermarch? should they countermarch?	should I be countermarching? should you be countermarching? should she be countermarching? should we be countermarching? should you be countermarching? should they be countermarching?
Perfect	V-ing perfect
should I have countermarched? should you have countermarched? should she have countermarched? should we have countermarched? should you have countermarched? should they have countermarched?	should I have been countermarching? should you have been countermarching? should she have been countermarching? should we have been countermarching? should you have been countermarching? should they have been countermarching?

Interro-negative form

Simple form	V-ing form
shouldn't I countermarch? shouldn't you countermarch? shouldn't she countermarch? shouldn't we countermarch? shouldn't you countermarch? shouldn't they countermarch?	shouldn't I be countermarching? shouldn't you be countermarching? shouldn't she be countermarching? shouldn't we be countermarching? shouldn't you be countermarching? shouldn't they be countermarching?
Perfect	V-ing perfect
shouldn't I have countermarched? shouldn't you have countermarched? shouldn't she have countermarched? shouldn't we have countermarched? shouldn't you have countermarched? shouldn't they have countermarched?	shouldn't I have been countermarching? shouldn't you have been countermarching? shouldn't she have been countermarching? shouldn't we have been countermarching? shouldn't you have been countermarching? shouldn't they have been countermarching?