must climb
Verbo regular: climb - climbed- climbed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must climb
you must climb
she must climb
we must climb
you must climb
they must climb 	I must be climbing
you must be climbing
she must be climbing
we must be climbing
you must be climbing
they must be climbing	I must have climbed
you must have climbed
she must have climbed
we must have climbed
you must have climbed
they must have climbed	I must have been climbing
you must have been climbing
she must have been climbing
we must have been climbing
you must have been climbing
they must have been climbing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't climb
you mustn't climb
she mustn't climb
we mustn't climb
you mustn't climb
they mustn't climb 	I mustn't be climbing
you mustn't be climbing
she mustn't be climbing
we mustn't be climbing
you mustn't be climbing
they mustn't be climbing	I mustn't have climbed
you mustn't have climbed
she mustn't have climbed
we mustn't have climbed
you mustn't have climbed
they mustn't have climbed	I mustn't have been climbing
you mustn't have been climbing
she mustn't have been climbing
we mustn't have been climbing
you mustn't have been climbing
they mustn't have been climbing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I climb?
must you climb?
must she climb?
must we climb?
must you climb?
must they climb? 	must I be climbing?
must you be climbing?
must she be climbing?
must we be climbing?
must you be climbing?
must they be climbing? 	must I have climbed?
must you have climbed?
must she have climbed?
must we have climbed?
must you have climbed?
must they have climbed? 	must I have been climbing?
must you have been climbing?
must she have been climbing?
must we have been climbing?
must you have been climbing?
must they have been climbing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I climb?
mustn't you climb?
mustn't she climb?
mustn't we climb?
mustn't you climb?
mustn't they climb? 	mustn't I be climbing?
mustn't you be climbing?
mustn't she be climbing?
mustn't we be climbing?
mustn't you be climbing?
mustn't they be climbing? 	mustn't I have climbed?
mustn't you have climbed?
mustn't she have climbed?
mustn't we have climbed?
mustn't you have climbed?
mustn't they have climbed? 	mustn't I have been climbing?
mustn't you have been climbing?
mustn't she have been climbing?
mustn't we have been climbing?
mustn't you have been climbing?
mustn't they have been climbing?