English verb conjugation
OUGHT TO STERILISE

Regular verb: sterilise - sterilised - sterilised

Affirmation

Simple form	V-ing form
I ought to sterilise you ought to sterilise he ought to sterilise we ought to sterilise you ought to sterilise they ought to sterilise	I ought to be sterilising you ought to be sterilising he ought to be sterilising we ought to be sterilising you ought to be sterilising they ought to be sterilising
Perfect	V-ing perfect
I ought to have sterilised you ought to have sterilised he ought to have sterilised we ought to have sterilised you ought to have sterilised they ought to have sterilised	I ought to have been sterilising you ought to have been sterilising he ought to have been sterilising we ought to have been sterilising you ought to have been sterilising they ought to have been sterilising

Negation

Simple form	V-ing form
I ought not to sterilise you ought not to sterilise he ought not to sterilise we ought not to sterilise you ought not to sterilise they ought not to sterilise	I ought not to sterilising you ought not to sterilising he ought not to sterilising we ought not to sterilising you ought not to sterilising they ought not to sterilising
Perfect	V-ing perfect
I ought not to have sterilised you ought not to have sterilised he ought not to have sterilised we ought not to have sterilised you ought not to have sterilised they ought not to have sterilised	I ought not to have been sterilising you ought not to have been sterilising he ought not to have been sterilising we ought not to have been sterilising you ought not to have been sterilising they ought not to have been sterilising

Interrogative form

Simple form	V-ing form
ought to I sterilise? ought to you sterilise? ought to he sterilise? ought to we sterilise? ought to you sterilise? ought to they sterilise?	ought to I be sterilising? ought to you be sterilising? ought to he be sterilising? ought to we be sterilising? ought to you be sterilising? ought to they be sterilising?
Perfect	V-ing perfect
ought to I have sterilised? ought to you have sterilised? ought to he have sterilised? ought to we have sterilised? ought to you have sterilised? ought to they have sterilised?	ought to I have been sterilising? ought to you have been sterilising? ought to he have been sterilising? ought to we have been sterilising? ought to you have been sterilising? ought to they have been sterilising?

Interro-negative form

Simple form	V-ing form
ought I not to sterilise? ought you not to sterilise? ought he not to sterilise? ought we not to sterilise? ought you not to sterilise? ought they not to sterilise?	ought I not to be sterilising? ought you not to be sterilising? ought he not to be sterilising? ought we not to be sterilising? ought you not to be sterilising? ought they not to be sterilising?
Perfect	V-ing perfect
ought I not to have sterilised? ought you not to have sterilised? ought he not to have sterilised? ought we not to have sterilised? ought you not to have sterilised? ought they not to have sterilised?	ought I not to have been sterilising? ought you not to have been sterilising? ought he not to have been sterilising? ought we not to have been sterilising? ought you not to have been sterilising? ought they not to have been sterilising?