can second-guess
Regular verb: second-guess - second-guessed- second-guessed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can second-guess
you can second-guess
she can second-guess
we can second-guess
you can second-guess
they can second-guess 	I can be second-guessing
you can be second-guessing
she can be second-guessing
we can be second-guessing
you can be second-guessing
they can be second-guessing	I can have second-guessed
you can have second-guessed
she can have second-guessed
we can have second-guessed
you can have second-guessed
they can have second-guessed	I can have been second-guessing
you can have been second-guessing
she can have been second-guessing
we can have been second-guessing
you can have been second-guessing
they can have been second-guessing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot second-guess
you cannot second-guess
she cannot second-guess
we cannot second-guess
you cannot second-guess
they cannot second-guess 	I cannot be second-guessing
you cannot be second-guessing
she cannot be second-guessing
we cannot be second-guessing
you cannot be second-guessing
they cannot be second-guessing	I cannot have second-guessed
you cannot have second-guessed
she cannot have second-guessed
we cannot have second-guessed
you cannot have second-guessed
they cannot have second-guessed	I cannot have been second-guessing
you cannot have been second-guessing
she cannot have been second-guessing
we cannot have been second-guessing
you cannot have been second-guessing
they cannot have been second-guessing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I second-guess?
can you second-guess?
can she second-guess?
can we second-guess?
can you second-guess?
can they second-guess? 	can I be second-guessing?
can you be second-guessing?
can she be second-guessing?
can we be second-guessing?
can you be second-guessing?
can they be second-guessing? 	can I have second-guessed?
can you have second-guessed?
can she have second-guessed?
can we have second-guessed?
can you have second-guessed?
can they have second-guessed? 	can I have been second-guessing?
can you have been second-guessing?
can she have been second-guessing?
can we have been second-guessing?
can you have been second-guessing?
can they have been second-guessing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not second-guess?
can you not second-guess?
can she not second-guess?
can we not second-guess?
can you not second-guess?
can they not second-guess? 	can I not be second-guessing?
can you not be second-guessing?
can she not be second-guessing?
can we not be second-guessing?
can you not be second-guessing?
can they not be second-guessing? 	can I not have second-guessed?
can you not have second-guessed?
can she not have second-guessed?
can we not have second-guessed?
can you not have second-guessed?
can they not have second-guessed? 	can I not have been second-guessing?
can you not have been second-guessing?
can she not have been second-guessing?
can we not have been second-guessing?
can you not have been second-guessing?
can they not have been second-guessing?