English verb conjugation
CAN TOOTH

Regular verb: tooth - toothed - toothed

Affirmation

Simple form	V-ing form
I can tooth you can tooth she can tooth we can tooth you can tooth they can tooth	I can be toothing you can be toothing she 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 she 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 she 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 cannot tooth you cannot tooth she cannot tooth we cannot tooth you cannot tooth they cannot tooth	I cannot be toothing you cannot be toothing she cannot be toothing we cannot be toothing you cannot be toothing they cannot be toothing
Perfect	V-ing perfect
I cannot have toothed you cannot have toothed she cannot have toothed we cannot have toothed you cannot have toothed they cannot have toothed	I cannot have been toothing you cannot have been toothing she cannot have been toothing we cannot have been toothing you cannot have been toothing they cannot have been toothing

Interrogative form

Simple form	V-ing form
can I tooth? can you tooth? can she tooth? can we tooth? can you tooth? can they tooth?	can I be toothing? can you be toothing? can she 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 she 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 she 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 I not tooth? can you not tooth? can she not tooth? can we not tooth? can you not tooth? can they not tooth?	can I not be toothing? can you not be toothing? can she not be toothing? can we not be toothing? can you not be toothing? can they not be toothing?
Perfect	V-ing perfect
can I not have toothed? can you not have toothed? can she not have toothed? can we not have toothed? can you not have toothed? can they not have toothed?	can I not have been toothing? can you not have been toothing? can she not have been toothing? can we not have been toothing? can you not have been toothing? can they not have been toothing?