should believe
Regular verb: believe - believed- believed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should believe
you should believe
he should believe
we should believe
you should believe
they should believe 	I should be believing
you should be believing
he should be believing
we should be believing
you should be believing
they should be believing	I should have believed
you should have believed
he should have believed
we should have believed
you should have believed
they should have believed	I should have been believing
you should have been believing
he should have been believing
we should have been believing
you should have been believing
they should have been believing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not believe
you should not believe
he should not believe
we should not believe
you should not believe
they should not believe 	I should not be believing
you should not be believing
he should not be believing
we should not be believing
you should not be believing
they should not be believing	I should not have believed
you should not have believed
he should not have believed
we should not have believed
you should not have believed
they should not have believed	I should not have been believing
you should not have been believing
he should not have been believing
we should not have been believing
you should not have been believing
they should not have been believing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I believe?
should you believe?
should he believe?
should we believe?
should you believe?
should they believe? 	should I be believing?
should you be believing?
should he be believing?
should we be believing?
should you be believing?
should they be believing? 	should I have believed?
should you have believed?
should he have believed?
should we have believed?
should you have believed?
should they have believed? 	should I have been believing?
should you have been believing?
should he have been believing?
should we have been believing?
should you have been believing?
should they have been believing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not believe?
should you not believe?
should he not believe?
should we not believe?
should you not believe?
should they not believe? 	should I not be believing?
should you not be believing?
should he not be believing?
should we not be believing?
should you not be believing?
should they not be believing? 	should I not have believed?
should you not have believed?
should he not have believed?
should we not have believed?
should you not have believed?
should they not have believed? 	should I not have been believing?
should you not have been believing?
should he not have been believing?
should we not have been believing?
should you not have been believing?
should they not have been believing?