I must stonewash you must stonewash he must stonewash we must stonewash you must stonewash they must stonewash
V-ing form
I must be stonewashing you must be stonewashing he must be stonewashing we must be stonewashing you must be stonewashing they must be stonewashing
Perfect
I must have stonewashed you must have stonewashed he must have stonewashed we must have stonewashed you must have stonewashed they must have stonewashed
V-ing perfect
I must have been stonewashing you must have been stonewashing he must have been stonewashing we must have been stonewashing you must have been stonewashing they must have been stonewashing
Negation
Simple form
I must not stonewash you must not stonewash he must not stonewash we must not stonewash you must not stonewash they must not stonewash
V-ing form
I must not be stonewashing you must not be stonewashing he must not be stonewashing we must not be stonewashing you must not be stonewashing they must not be stonewashing
Perfect
I must not have stonewashed you must not have stonewashed he must not have stonewashed we must not have stonewashed you must not have stonewashed they must not have stonewashed
V-ing perfect
I must not have been stonewashing you must not have been stonewashing he must not have been stonewashing we must not have been stonewashing you must not have been stonewashing they must not have been stonewashing
Interrogative form
Simple form
must I stonewash? must you stonewash? must he stonewash? must we stonewash? must you stonewash? must they stonewash?
V-ing form
must I be stonewashing? must you be stonewashing? must he be stonewashing? must we be stonewashing? must you be stonewashing? must they be stonewashing?
Perfect
must I have stonewashed? must you have stonewashed? must he have stonewashed? must we have stonewashed? must you have stonewashed? must they have stonewashed?
V-ing perfect
must I have been stonewashing? must you have been stonewashing? must he have been stonewashing? must we have been stonewashing? must you have been stonewashing? must they have been stonewashing?
Interro-negative form
Simple form
must I not stonewash? must you not stonewash? must he not stonewash? must we not stonewash? must you not stonewash? must they not stonewash?
V-ing form
must I not be stonewashing? must you not be stonewashing? must he not be stonewashing? must we not be stonewashing? must you not be stonewashing? must they not be stonewashing?
Perfect
must I not have stonewashed? must you not have stonewashed? must he not have stonewashed? must we not have stonewashed? must you not have stonewashed? must they not have stonewashed?
V-ing perfect
must I not have been stonewashing? must you not have been stonewashing? must he not have been stonewashing? must we not have been stonewashing? must you not have been stonewashing? must they not have been stonewashing?