I must miscalculate you must miscalculate he must miscalculate we must miscalculate you must miscalculate they must miscalculate
V-ing form
I must be miscalculating you must be miscalculating he must be miscalculating we must be miscalculating you must be miscalculating they must be miscalculating
Perfect
I must have miscalculated you must have miscalculated he must have miscalculated we must have miscalculated you must have miscalculated they must have miscalculated
V-ing perfect
I must have been miscalculating you must have been miscalculating he must have been miscalculating we must have been miscalculating you must have been miscalculating they must have been miscalculating
Negation
Simple form
I must not miscalculate you must not miscalculate he must not miscalculate we must not miscalculate you must not miscalculate they must not miscalculate
V-ing form
I must not be miscalculating you must not be miscalculating he must not be miscalculating we must not be miscalculating you must not be miscalculating they must not be miscalculating
Perfect
I must not have miscalculated you must not have miscalculated he must not have miscalculated we must not have miscalculated you must not have miscalculated they must not have miscalculated
V-ing perfect
I must not have been miscalculating you must not have been miscalculating he must not have been miscalculating we must not have been miscalculating you must not have been miscalculating they must not have been miscalculating
Interrogative form
Simple form
must I miscalculate? must you miscalculate? must he miscalculate? must we miscalculate? must you miscalculate? must they miscalculate?
V-ing form
must I be miscalculating? must you be miscalculating? must he be miscalculating? must we be miscalculating? must you be miscalculating? must they be miscalculating?
Perfect
must I have miscalculated? must you have miscalculated? must he have miscalculated? must we have miscalculated? must you have miscalculated? must they have miscalculated?
V-ing perfect
must I have been miscalculating? must you have been miscalculating? must he have been miscalculating? must we have been miscalculating? must you have been miscalculating? must they have been miscalculating?
Interro-negative form
Simple form
must I not miscalculate? must you not miscalculate? must he not miscalculate? must we not miscalculate? must you not miscalculate? must they not miscalculate?
V-ing form
must I not be miscalculating? must you not be miscalculating? must he not be miscalculating? must we not be miscalculating? must you not be miscalculating? must they not be miscalculating?
Perfect
must I not have miscalculated? must you not have miscalculated? must he not have miscalculated? must we not have miscalculated? must you not have miscalculated? must they not have miscalculated?
V-ing perfect
must I not have been miscalculating? must you not have been miscalculating? must he not have been miscalculating? must we not have been miscalculating? must you not have been miscalculating? must they not have been miscalculating?