must stake
Verbo regular: stake - staked- staked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must stake
you must stake
he must stake
we must stake
you must stake
they must stake 	I must be staking
you must be staking
he must be staking
we must be staking
you must be staking
they must be staking	I must have staked
you must have staked
he must have staked
we must have staked
you must have staked
they must have staked	I must have been staking
you must have been staking
he must have been staking
we must have been staking
you must have been staking
they must have been staking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't stake
you mustn't stake
he mustn't stake
we mustn't stake
you mustn't stake
they mustn't stake 	I mustn't be staking
you mustn't be staking
he mustn't be staking
we mustn't be staking
you mustn't be staking
they mustn't be staking	I mustn't have staked
you mustn't have staked
he mustn't have staked
we mustn't have staked
you mustn't have staked
they mustn't have staked	I mustn't have been staking
you mustn't have been staking
he mustn't have been staking
we mustn't have been staking
you mustn't have been staking
they mustn't have been staking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I stake?
must you stake?
must he stake?
must we stake?
must you stake?
must they stake? 	must I be staking?
must you be staking?
must he be staking?
must we be staking?
must you be staking?
must they be staking? 	must I have staked?
must you have staked?
must he have staked?
must we have staked?
must you have staked?
must they have staked? 	must I have been staking?
must you have been staking?
must he have been staking?
must we have been staking?
must you have been staking?
must they have been staking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I stake?
mustn't you stake?
mustn't he stake?
mustn't we stake?
mustn't you stake?
mustn't they stake? 	mustn't I be staking?
mustn't you be staking?
mustn't he be staking?
mustn't we be staking?
mustn't you be staking?
mustn't they be staking? 	mustn't I have staked?
mustn't you have staked?
mustn't he have staked?
mustn't we have staked?
mustn't you have staked?
mustn't they have staked? 	mustn't I have been staking?
mustn't you have been staking?
mustn't he have been staking?
mustn't we have been staking?
mustn't you have been staking?
mustn't they have been staking?