English verb conjugation
SHOULD SKULK

Regular verb: skulk - skulked - skulked

Affirmation

Simple form	V-ing form
I should skulk you should skulk he should skulk we should skulk you should skulk they should skulk	I should be skulking you should be skulking he should be skulking we should be skulking you should be skulking they should be skulking
Perfect	V-ing perfect
I should have skulked you should have skulked he should have skulked we should have skulked you should have skulked they should have skulked	I should have been skulking you should have been skulking he should have been skulking we should have been skulking you should have been skulking they should have been skulking

Negation

Simple form	V-ing form
I should not skulk you should not skulk he should not skulk we should not skulk you should not skulk they should not skulk	I should not be skulking you should not be skulking he should not be skulking we should not be skulking you should not be skulking they should not be skulking
Perfect	V-ing perfect
I should not have skulked you should not have skulked he should not have skulked we should not have skulked you should not have skulked they should not have skulked	I should not have been skulking you should not have been skulking he should not have been skulking we should not have been skulking you should not have been skulking they should not have been skulking

Interrogative form

Simple form	V-ing form
should I skulk? should you skulk? should he skulk? should we skulk? should you skulk? should they skulk?	should I be skulking? should you be skulking? should he be skulking? should we be skulking? should you be skulking? should they be skulking?
Perfect	V-ing perfect
should I have skulked? should you have skulked? should he have skulked? should we have skulked? should you have skulked? should they have skulked?	should I have been skulking? should you have been skulking? should he have been skulking? should we have been skulking? should you have been skulking? should they have been skulking?

Interro-negative form

Simple form	V-ing form
should I not skulk? should you not skulk? should he not skulk? should we not skulk? should you not skulk? should they not skulk?	should I not be skulking? should you not be skulking? should he not be skulking? should we not be skulking? should you not be skulking? should they not be skulking?
Perfect	V-ing perfect
should I not have skulked? should you not have skulked? should he not have skulked? should we not have skulked? should you not have skulked? should they not have skulked?	should I not have been skulking? should you not have been skulking? should he not have been skulking? should we not have been skulking? should you not have been skulking? should they not have been skulking?