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