English verb conjugation
OUGHT TO CRAB

Regular verb: crab - crabbed - crabbed

Affirmation

Simple form	V-ing form
I ought to crab you ought to crab he ought to crab we ought to crab you ought to crab they ought to crab	I ought to be crabbing you ought to be crabbing he ought to be crabbing we ought to be crabbing you ought to be crabbing they ought to be crabbing
Perfect	V-ing perfect
I ought to have crabbed you ought to have crabbed he ought to have crabbed we ought to have crabbed you ought to have crabbed they ought to have crabbed	I ought to have been crabbing you ought to have been crabbing he ought to have been crabbing we ought to have been crabbing you ought to have been crabbing they ought to have been crabbing

Negation

Simple form	V-ing form
I ought not to crab you ought not to crab he ought not to crab we ought not to crab you ought not to crab they ought not to crab	I ought not to crabbing you ought not to crabbing he ought not to crabbing we ought not to crabbing you ought not to crabbing they ought not to crabbing
Perfect	V-ing perfect
I ought not to have crabbed you ought not to have crabbed he ought not to have crabbed we ought not to have crabbed you ought not to have crabbed they ought not to have crabbed	I ought not to have been crabbing you ought not to have been crabbing he ought not to have been crabbing we ought not to have been crabbing you ought not to have been crabbing they ought not to have been crabbing

Interrogative form

Simple form	V-ing form
ought to I crab? ought to you crab? ought to he crab? ought to we crab? ought to you crab? ought to they crab?	ought to I be crabbing? ought to you be crabbing? ought to he be crabbing? ought to we be crabbing? ought to you be crabbing? ought to they be crabbing?
Perfect	V-ing perfect
ought to I have crabbed? ought to you have crabbed? ought to he have crabbed? ought to we have crabbed? ought to you have crabbed? ought to they have crabbed?	ought to I have been crabbing? ought to you have been crabbing? ought to he have been crabbing? ought to we have been crabbing? ought to you have been crabbing? ought to they have been crabbing?

Interro-negative form

Simple form	V-ing form
ought I not to crab? ought you not to crab? ought he not to crab? ought we not to crab? ought you not to crab? ought they not to crab?	ought I not to be crabbing? ought you not to be crabbing? ought he not to be crabbing? ought we not to be crabbing? ought you not to be crabbing? ought they not to be crabbing?
Perfect	V-ing perfect
ought I not to have crabbed? ought you not to have crabbed? ought he not to have crabbed? ought we not to have crabbed? ought you not to have crabbed? ought they not to have crabbed?	ought I not to have been crabbing? ought you not to have been crabbing? ought he not to have been crabbing? ought we not to have been crabbing? ought you not to have been crabbing? ought they not to have been crabbing?