English verb conjugation
MUST COBBLE

Regular verb: cobble - cobbled - cobbled

Affirmation

Simple form	V-ing form
I must cobble you must cobble he must cobble we must cobble you must cobble they must cobble	I must be cobbling you must be cobbling he must be cobbling we must be cobbling you must be cobbling they must be cobbling
Perfect	V-ing perfect
I must have cobbled you must have cobbled he must have cobbled we must have cobbled you must have cobbled they must have cobbled	I must have been cobbling you must have been cobbling he must have been cobbling we must have been cobbling you must have been cobbling they must have been cobbling

Negation

Simple form	V-ing form
I mustn't cobble you mustn't cobble he mustn't cobble we mustn't cobble you mustn't cobble they mustn't cobble	I mustn't be cobbling you mustn't be cobbling he mustn't be cobbling we mustn't be cobbling you mustn't be cobbling they mustn't be cobbling
Perfect	V-ing perfect
I mustn't have cobbled you mustn't have cobbled he mustn't have cobbled we mustn't have cobbled you mustn't have cobbled they mustn't have cobbled	I mustn't have been cobbling you mustn't have been cobbling he mustn't have been cobbling we mustn't have been cobbling you mustn't have been cobbling they mustn't have been cobbling

Interrogative form

Simple form	V-ing form
must I cobble? must you cobble? must he cobble? must we cobble? must you cobble? must they cobble?	must I be cobbling? must you be cobbling? must he be cobbling? must we be cobbling? must you be cobbling? must they be cobbling?
Perfect	V-ing perfect
must I have cobbled? must you have cobbled? must he have cobbled? must we have cobbled? must you have cobbled? must they have cobbled?	must I have been cobbling? must you have been cobbling? must he have been cobbling? must we have been cobbling? must you have been cobbling? must they have been cobbling?

Interro-negative form

Simple form	V-ing form
mustn't I cobble? mustn't you cobble? mustn't he cobble? mustn't we cobble? mustn't you cobble? mustn't they cobble?	mustn't I be cobbling? mustn't you be cobbling? mustn't he be cobbling? mustn't we be cobbling? mustn't you be cobbling? mustn't they be cobbling?
Perfect	V-ing perfect
mustn't I have cobbled? mustn't you have cobbled? mustn't he have cobbled? mustn't we have cobbled? mustn't you have cobbled? mustn't they have cobbled?	mustn't I have been cobbling? mustn't you have been cobbling? mustn't he have been cobbling? mustn't we have been cobbling? mustn't you have been cobbling? mustn't they have been cobbling?