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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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?