English verb conjugation
MUST ACHIEVE

Regular verb: achieve - achieved - achieved

Affirmation

Simple form	V-ing form
I must achieve you must achieve he must achieve we must achieve you must achieve they must achieve	I must be achieving you must be achieving he must be achieving we must be achieving you must be achieving they must be achieving
Perfect	V-ing perfect
I must have achieved you must have achieved he must have achieved we must have achieved you must have achieved they must have achieved	I must have been achieving you must have been achieving he must have been achieving we must have been achieving you must have been achieving they must have been achieving

Negation

Simple form	V-ing form
I mustn't achieve you mustn't achieve he mustn't achieve we mustn't achieve you mustn't achieve they mustn't achieve	I mustn't be achieving you mustn't be achieving he mustn't be achieving we mustn't be achieving you mustn't be achieving they mustn't be achieving
Perfect	V-ing perfect
I mustn't have achieved you mustn't have achieved he mustn't have achieved we mustn't have achieved you mustn't have achieved they mustn't have achieved	I mustn't have been achieving you mustn't have been achieving he mustn't have been achieving we mustn't have been achieving you mustn't have been achieving they mustn't have been achieving

Interrogative form

Simple form	V-ing form
must I achieve? must you achieve? must he achieve? must we achieve? must you achieve? must they achieve?	must I be achieving? must you be achieving? must he be achieving? must we be achieving? must you be achieving? must they be achieving?
Perfect	V-ing perfect
must I have achieved? must you have achieved? must he have achieved? must we have achieved? must you have achieved? must they have achieved?	must I have been achieving? must you have been achieving? must he have been achieving? must we have been achieving? must you have been achieving? must they have been achieving?

Interro-negative form

Simple form	V-ing form
mustn't I achieve? mustn't you achieve? mustn't he achieve? mustn't we achieve? mustn't you achieve? mustn't they achieve?	mustn't I be achieving? mustn't you be achieving? mustn't he be achieving? mustn't we be achieving? mustn't you be achieving? mustn't they be achieving?
Perfect	V-ing perfect
mustn't I have achieved? mustn't you have achieved? mustn't he have achieved? mustn't we have achieved? mustn't you have achieved? mustn't they have achieved?	mustn't I have been achieving? mustn't you have been achieving? mustn't he have been achieving? mustn't we have been achieving? mustn't you have been achieving? mustn't they have been achieving?