English verb conjugation
CAN TOOTH

Regular verb: tooth - toothed - toothed

Affirmation

Simple form	V-ing form
I can tooth you can tooth he can tooth we can tooth you can tooth they can tooth	I can be toothing you can be toothing he can be toothing we can be toothing you can be toothing they can be toothing
Perfect	V-ing perfect
I can have toothed you can have toothed he can have toothed we can have toothed you can have toothed they can have toothed	I can have been toothing you can have been toothing he can have been toothing we can have been toothing you can have been toothing they can have been toothing

Negation

Simple form	V-ing form
I can't tooth you can't tooth he can't tooth we can't tooth you can't tooth they can't tooth	I can't be toothing you can't be toothing he can't be toothing we can't be toothing you can't be toothing they can't be toothing
Perfect	V-ing perfect
I can't have toothed you can't have toothed he can't have toothed we can't have toothed you can't have toothed they can't have toothed	I can't have been toothing you can't have been toothing he can't have been toothing we can't have been toothing you can't have been toothing they can't have been toothing

Interrogative form

Simple form	V-ing form
can I tooth? can you tooth? can he tooth? can we tooth? can you tooth? can they tooth?	can I be toothing? can you be toothing? can he be toothing? can we be toothing? can you be toothing? can they be toothing?
Perfect	V-ing perfect
can I have toothed? can you have toothed? can he have toothed? can we have toothed? can you have toothed? can they have toothed?	can I have been toothing? can you have been toothing? can he have been toothing? can we have been toothing? can you have been toothing? can they have been toothing?

Interro-negative form

Simple form	V-ing form
can't I tooth? can't you tooth? can't he tooth? can't we tooth? can't you tooth? can't they tooth?	can't I be toothing? can't you be toothing? can't he be toothing? can't we be toothing? can't you be toothing? can't they be toothing?
Perfect	V-ing perfect
can't I have toothed? can't you have toothed? can't he have toothed? can't we have toothed? can't you have toothed? can't they have toothed?	can't I have been toothing? can't you have been toothing? can't he have been toothing? can't we have been toothing? can't you have been toothing? can't they have been toothing?