I must squirt you must squirt he must squirt we must squirt you must squirt they must squirt
V-ing form
I must be squirting you must be squirting he must be squirting we must be squirting you must be squirting they must be squirting
Perfect
I must have squirted you must have squirted he must have squirted we must have squirted you must have squirted they must have squirted
V-ing perfect
I must have been squirting you must have been squirting he must have been squirting we must have been squirting you must have been squirting they must have been squirting
Negation
Simple form
I must not squirt you must not squirt he must not squirt we must not squirt you must not squirt they must not squirt
V-ing form
I must not be squirting you must not be squirting he must not be squirting we must not be squirting you must not be squirting they must not be squirting
Perfect
I must not have squirted you must not have squirted he must not have squirted we must not have squirted you must not have squirted they must not have squirted
V-ing perfect
I must not have been squirting you must not have been squirting he must not have been squirting we must not have been squirting you must not have been squirting they must not have been squirting
Interrogative form
Simple form
must I squirt? must you squirt? must he squirt? must we squirt? must you squirt? must they squirt?
V-ing form
must I be squirting? must you be squirting? must he be squirting? must we be squirting? must you be squirting? must they be squirting?
Perfect
must I have squirted? must you have squirted? must he have squirted? must we have squirted? must you have squirted? must they have squirted?
V-ing perfect
must I have been squirting? must you have been squirting? must he have been squirting? must we have been squirting? must you have been squirting? must they have been squirting?
Interro-negative form
Simple form
must I not squirt? must you not squirt? must he not squirt? must we not squirt? must you not squirt? must they not squirt?
V-ing form
must I not be squirting? must you not be squirting? must he not be squirting? must we not be squirting? must you not be squirting? must they not be squirting?
Perfect
must I not have squirted? must you not have squirted? must he not have squirted? must we not have squirted? must you not have squirted? must they not have squirted?
V-ing perfect
must I not have been squirting? must you not have been squirting? must he not have been squirting? must we not have been squirting? must you not have been squirting? must they not have been squirting?