English verb conjugation
MUST TETHER

Regular verb: tether - tethered - tethered

Affirmation

Simple form	V-ing form
I must tether you must tether he must tether we must tether you must tether they must tether	I must be tethering you must be tethering he must be tethering we must be tethering you must be tethering they must be tethering
Perfect	V-ing perfect
I must have tethered you must have tethered he must have tethered we must have tethered you must have tethered they must have tethered	I must have been tethering you must have been tethering he must have been tethering we must have been tethering you must have been tethering they must have been tethering

Negation

Simple form	V-ing form
I must not tether you must not tether he must not tether we must not tether you must not tether they must not tether	I must not be tethering you must not be tethering he must not be tethering we must not be tethering you must not be tethering they must not be tethering
Perfect	V-ing perfect
I must not have tethered you must not have tethered he must not have tethered we must not have tethered you must not have tethered they must not have tethered	I must not have been tethering you must not have been tethering he must not have been tethering we must not have been tethering you must not have been tethering they must not have been tethering

Interrogative form

Simple form	V-ing form
must I tether? must you tether? must he tether? must we tether? must you tether? must they tether?	must I be tethering? must you be tethering? must he be tethering? must we be tethering? must you be tethering? must they be tethering?
Perfect	V-ing perfect
must I have tethered? must you have tethered? must he have tethered? must we have tethered? must you have tethered? must they have tethered?	must I have been tethering? must you have been tethering? must he have been tethering? must we have been tethering? must you have been tethering? must they have been tethering?

Interro-negative form

Simple form	V-ing form
must I not tether? must you not tether? must he not tether? must we not tether? must you not tether? must they not tether?	must I not be tethering? must you not be tethering? must he not be tethering? must we not be tethering? must you not be tethering? must they not be tethering?
Perfect	V-ing perfect
must I not have tethered? must you not have tethered? must he not have tethered? must we not have tethered? must you not have tethered? must they not have tethered?	must I not have been tethering? must you not have been tethering? must he not have been tethering? must we not have been tethering? must you not have been tethering? must they not have been tethering?