I should travel you should travel he should travel we should travel you should travel they should travel
V-ing form
I should be travelling you should be travelling he should be travelling we should be travelling you should be travelling they should be travelling
Perfect
I should have travelled you should have travelled he should have travelled we should have travelled you should have travelled they should have travelled
V-ing perfect
I should have been travelling you should have been travelling he should have been travelling we should have been travelling you should have been travelling they should have been travelling
Negation
Simple form
I should not travel you should not travel he should not travel we should not travel you should not travel they should not travel
V-ing form
I should not be travelling you should not be travelling he should not be travelling we should not be travelling you should not be travelling they should not be travelling
Perfect
I should not have travelled you should not have travelled he should not have travelled we should not have travelled you should not have travelled they should not have travelled
V-ing perfect
I should not have been travelling you should not have been travelling he should not have been travelling we should not have been travelling you should not have been travelling they should not have been travelling
Interrogative form
Simple form
should I travel? should you travel? should he travel? should we travel? should you travel? should they travel?
V-ing form
should I be travelling? should you be travelling? should he be travelling? should we be travelling? should you be travelling? should they be travelling?
Perfect
should I have travelled? should you have travelled? should he have travelled? should we have travelled? should you have travelled? should they have travelled?
V-ing perfect
should I have been travelling? should you have been travelling? should he have been travelling? should we have been travelling? should you have been travelling? should they have been travelling?
Interro-negative form
Simple form
should I not travel? should you not travel? should he not travel? should we not travel? should you not travel? should they not travel?
V-ing form
should I not be travelling? should you not be travelling? should he not be travelling? should we not be travelling? should you not be travelling? should they not be travelling?
Perfect
should I not have travelled? should you not have travelled? should he not have travelled? should we not have travelled? should you not have travelled? should they not have travelled?
V-ing perfect
should I not have been travelling? should you not have been travelling? should he not have been travelling? should we not have been travelling? should you not have been travelling? should they not have been travelling?