English verb conjugation
CAN PITH

Regular verb: pith - pithed - pithed

Affirmation

Simple form	V-ing form
I can pith you can pith she can pith we can pith you can pith they can pith	I can be pithing you can be pithing she can be pithing we can be pithing you can be pithing they can be pithing
Perfect	V-ing perfect
I can have pithed you can have pithed she can have pithed we can have pithed you can have pithed they can have pithed	I can have been pithing you can have been pithing she can have been pithing we can have been pithing you can have been pithing they can have been pithing

Negation

Simple form	V-ing form
I cannot pith you cannot pith she cannot pith we cannot pith you cannot pith they cannot pith	I cannot be pithing you cannot be pithing she cannot be pithing we cannot be pithing you cannot be pithing they cannot be pithing
Perfect	V-ing perfect
I cannot have pithed you cannot have pithed she cannot have pithed we cannot have pithed you cannot have pithed they cannot have pithed	I cannot have been pithing you cannot have been pithing she cannot have been pithing we cannot have been pithing you cannot have been pithing they cannot have been pithing

Interrogative form

Simple form	V-ing form
can I pith? can you pith? can she pith? can we pith? can you pith? can they pith?	can I be pithing? can you be pithing? can she be pithing? can we be pithing? can you be pithing? can they be pithing?
Perfect	V-ing perfect
can I have pithed? can you have pithed? can she have pithed? can we have pithed? can you have pithed? can they have pithed?	can I have been pithing? can you have been pithing? can she have been pithing? can we have been pithing? can you have been pithing? can they have been pithing?

Interro-negative form

Simple form	V-ing form
can I not pith? can you not pith? can she not pith? can we not pith? can you not pith? can they not pith?	can I not be pithing? can you not be pithing? can she not be pithing? can we not be pithing? can you not be pithing? can they not be pithing?
Perfect	V-ing perfect
can I not have pithed? can you not have pithed? can she not have pithed? can we not have pithed? can you not have pithed? can they not have pithed?	can I not have been pithing? can you not have been pithing? can she not have been pithing? can we not have been pithing? can you not have been pithing? can they not have been pithing?