I must familiarise you must familiarise she must familiarise we must familiarise you must familiarise they must familiarise
V-ing form
I must be familiarising you must be familiarising she must be familiarising we must be familiarising you must be familiarising they must be familiarising
Perfect
I must have familiarised you must have familiarised she must have familiarised we must have familiarised you must have familiarised they must have familiarised
V-ing perfect
I must have been familiarising you must have been familiarising she must have been familiarising we must have been familiarising you must have been familiarising they must have been familiarising
Negation
Simple form
I mustn't familiarise you mustn't familiarise she mustn't familiarise we mustn't familiarise you mustn't familiarise they mustn't familiarise
V-ing form
I mustn't be familiarising you mustn't be familiarising she mustn't be familiarising we mustn't be familiarising you mustn't be familiarising they mustn't be familiarising
Perfect
I mustn't have familiarised you mustn't have familiarised she mustn't have familiarised we mustn't have familiarised you mustn't have familiarised they mustn't have familiarised
V-ing perfect
I mustn't have been familiarising you mustn't have been familiarising she mustn't have been familiarising we mustn't have been familiarising you mustn't have been familiarising they mustn't have been familiarising
Interrogative form
Simple form
must I familiarise? must you familiarise? must she familiarise? must we familiarise? must you familiarise? must they familiarise?
V-ing form
must I be familiarising? must you be familiarising? must she be familiarising? must we be familiarising? must you be familiarising? must they be familiarising?
Perfect
must I have familiarised? must you have familiarised? must she have familiarised? must we have familiarised? must you have familiarised? must they have familiarised?
V-ing perfect
must I have been familiarising? must you have been familiarising? must she have been familiarising? must we have been familiarising? must you have been familiarising? must they have been familiarising?
Interro-negative form
Simple form
mustn't I familiarise? mustn't you familiarise? mustn't she familiarise? mustn't we familiarise? mustn't you familiarise? mustn't they familiarise?
V-ing form
mustn't I be familiarising? mustn't you be familiarising? mustn't she be familiarising? mustn't we be familiarising? mustn't you be familiarising? mustn't they be familiarising?
Perfect
mustn't I have familiarised? mustn't you have familiarised? mustn't she have familiarised? mustn't we have familiarised? mustn't you have familiarised? mustn't they have familiarised?
V-ing perfect
mustn't I have been familiarising? mustn't you have been familiarising? mustn't she have been familiarising? mustn't we have been familiarising? mustn't you have been familiarising? mustn't they have been familiarising?