English verb conjugation
CAN COLLAR

Regular verb: collar - collared - collared

Affirmation

Simple form	V-ing form
I can collar you can collar he can collar we can collar you can collar they can collar	I can be collaring you can be collaring he can be collaring we can be collaring you can be collaring they can be collaring
Perfect	V-ing perfect
I can have collared you can have collared he can have collared we can have collared you can have collared they can have collared	I can have been collaring you can have been collaring he can have been collaring we can have been collaring you can have been collaring they can have been collaring

Negation

Simple form	V-ing form
I can't collar you can't collar he can't collar we can't collar you can't collar they can't collar	I can't be collaring you can't be collaring he can't be collaring we can't be collaring you can't be collaring they can't be collaring
Perfect	V-ing perfect
I can't have collared you can't have collared he can't have collared we can't have collared you can't have collared they can't have collared	I can't have been collaring you can't have been collaring he can't have been collaring we can't have been collaring you can't have been collaring they can't have been collaring

Interrogative form

Simple form	V-ing form
can I collar? can you collar? can he collar? can we collar? can you collar? can they collar?	can I be collaring? can you be collaring? can he be collaring? can we be collaring? can you be collaring? can they be collaring?
Perfect	V-ing perfect
can I have collared? can you have collared? can he have collared? can we have collared? can you have collared? can they have collared?	can I have been collaring? can you have been collaring? can he have been collaring? can we have been collaring? can you have been collaring? can they have been collaring?

Interro-negative form

Simple form	V-ing form
can't I collar? can't you collar? can't he collar? can't we collar? can't you collar? can't they collar?	can't I be collaring? can't you be collaring? can't he be collaring? can't we be collaring? can't you be collaring? can't they be collaring?
Perfect	V-ing perfect
can't I have collared? can't you have collared? can't he have collared? can't we have collared? can't you have collared? can't they have collared?	can't I have been collaring? can't you have been collaring? can't he have been collaring? can't we have been collaring? can't you have been collaring? can't they have been collaring?