English verb conjugation
CAN UNLACE

Regular verb: unlace - unlaced - unlaced

Affirmation

Simple form	V-ing form
I can unlace you can unlace he can unlace we can unlace you can unlace they can unlace	I can be unlacing you can be unlacing he can be unlacing we can be unlacing you can be unlacing they can be unlacing
Perfect	V-ing perfect
I can have unlaced you can have unlaced he can have unlaced we can have unlaced you can have unlaced they can have unlaced	I can have been unlacing you can have been unlacing he can have been unlacing we can have been unlacing you can have been unlacing they can have been unlacing

Negation

Simple form	V-ing form
I can't unlace you can't unlace he can't unlace we can't unlace you can't unlace they can't unlace	I can't be unlacing you can't be unlacing he can't be unlacing we can't be unlacing you can't be unlacing they can't be unlacing
Perfect	V-ing perfect
I can't have unlaced you can't have unlaced he can't have unlaced we can't have unlaced you can't have unlaced they can't have unlaced	I can't have been unlacing you can't have been unlacing he can't have been unlacing we can't have been unlacing you can't have been unlacing they can't have been unlacing

Interrogative form

Simple form	V-ing form
can I unlace? can you unlace? can he unlace? can we unlace? can you unlace? can they unlace?	can I be unlacing? can you be unlacing? can he be unlacing? can we be unlacing? can you be unlacing? can they be unlacing?
Perfect	V-ing perfect
can I have unlaced? can you have unlaced? can he have unlaced? can we have unlaced? can you have unlaced? can they have unlaced?	can I have been unlacing? can you have been unlacing? can he have been unlacing? can we have been unlacing? can you have been unlacing? can they have been unlacing?

Interro-negative form

Simple form	V-ing form
can't I unlace? can't you unlace? can't he unlace? can't we unlace? can't you unlace? can't they unlace?	can't I be unlacing? can't you be unlacing? can't he be unlacing? can't we be unlacing? can't you be unlacing? can't they be unlacing?
Perfect	V-ing perfect
can't I have unlaced? can't you have unlaced? can't he have unlaced? can't we have unlaced? can't you have unlaced? can't they have unlaced?	can't I have been unlacing? can't you have been unlacing? can't he have been unlacing? can't we have been unlacing? can't you have been unlacing? can't they have been unlacing?