English verb conjugation
COULD MACE

Regular verb: mace - maced - maced

Affirmation

Simple form	V-ing form
I could mace you could mace he could mace we could mace you could mace they could mace	I could be macing you could be macing he could be macing we could be macing you could be macing they could be macing
Perfect	V-ing perfect
I could have maced you could have maced he could have maced we could have maced you could have maced they could have maced	I could have been macing you could have been macing he could have been macing we could have been macing you could have been macing they could have been macing

Negation

Simple form	V-ing form
I couldn't mace you couldn't mace he couldn't mace we couldn't mace you couldn't mace they couldn't mace	I couldn't be macing you couldn't be macing he couldn't be macing we couldn't be macing you couldn't be macing they couldn't be macing
Perfect	V-ing perfect
I couldn't have maced you couldn't have maced he couldn't have maced we couldn't have maced you couldn't have maced they couldn't have maced	I couldn't have been macing you couldn't have been macing he couldn't have been macing we couldn't have been macing you couldn't have been macing they couldn't have been macing

Interrogative form

Simple form	V-ing form
could I mace? could you mace? could he mace? could we mace? could you mace? could they mace?	could I be macing? could you be macing? could he be macing? could we be macing? could you be macing? could they be macing?
Perfect	V-ing perfect
could I have maced? could you have maced? could he have maced? could we have maced? could you have maced? could they have maced?	could I have been macing? could you have been macing? could he have been macing? could we have been macing? could you have been macing? could they have been macing?

Interro-negative form

Simple form	V-ing form
couldn't I mace? couldn't you mace? couldn't he mace? couldn't we mace? couldn't you mace? couldn't they mace?	couldn't I be macing? couldn't you be macing? couldn't he be macing? couldn't we be macing? couldn't you be macing? couldn't they be macing?
Perfect	V-ing perfect
couldn't I have maced? couldn't you have maced? couldn't he have maced? couldn't we have maced? couldn't you have maced? couldn't they have maced?	couldn't I have been macing? couldn't you have been macing? couldn't he have been macing? couldn't we have been macing? couldn't you have been macing? couldn't they have been macing?