I must interweave you must interweave he must interweave we must interweave you must interweave they must interweave
V-ing form
I must be interweaving you must be interweaving he must be interweaving we must be interweaving you must be interweaving they must be interweaving
Perfect
I must have interwoven you must have interwoven he must have interwoven we must have interwoven you must have interwoven they must have interwoven
V-ing perfect
I must have been interweaving you must have been interweaving he must have been interweaving we must have been interweaving you must have been interweaving they must have been interweaving
Negation
Simple form
I mustn't interweave you mustn't interweave he mustn't interweave we mustn't interweave you mustn't interweave they mustn't interweave
V-ing form
I mustn't be interweaving you mustn't be interweaving he mustn't be interweaving we mustn't be interweaving you mustn't be interweaving they mustn't be interweaving
Perfect
I mustn't have interwoven you mustn't have interwoven he mustn't have interwoven we mustn't have interwoven you mustn't have interwoven they mustn't have interwoven
V-ing perfect
I mustn't have been interweaving you mustn't have been interweaving he mustn't have been interweaving we mustn't have been interweaving you mustn't have been interweaving they mustn't have been interweaving
Interrogative form
Simple form
must I interweave? must you interweave? must he interweave? must we interweave? must you interweave? must they interweave?
V-ing form
must I be interweaving? must you be interweaving? must he be interweaving? must we be interweaving? must you be interweaving? must they be interweaving?
Perfect
must I have interwoven? must you have interwoven? must he have interwoven? must we have interwoven? must you have interwoven? must they have interwoven?
V-ing perfect
must I have been interweaving? must you have been interweaving? must he have been interweaving? must we have been interweaving? must you have been interweaving? must they have been interweaving?
Interro-negative form
Simple form
mustn't I interweave? mustn't you interweave? mustn't he interweave? mustn't we interweave? mustn't you interweave? mustn't they interweave?
V-ing form
mustn't I be interweaving? mustn't you be interweaving? mustn't he be interweaving? mustn't we be interweaving? mustn't you be interweaving? mustn't they be interweaving?
Perfect
mustn't I have interwoven? mustn't you have interwoven? mustn't he have interwoven? mustn't we have interwoven? mustn't you have interwoven? mustn't they have interwoven?
V-ing perfect
mustn't I have been interweaving? mustn't you have been interweaving? mustn't he have been interweaving? mustn't we have been interweaving? mustn't you have been interweaving? mustn't they have been interweaving?