I must tinkle you must tinkle he must tinkle we must tinkle you must tinkle they must tinkle
V-ing form
I must be tinkling you must be tinkling he must be tinkling we must be tinkling you must be tinkling they must be tinkling
Perfect
I must have tinkled you must have tinkled he must have tinkled we must have tinkled you must have tinkled they must have tinkled
V-ing perfect
I must have been tinkling you must have been tinkling he must have been tinkling we must have been tinkling you must have been tinkling they must have been tinkling
Negation
Simple form
I must not tinkle you must not tinkle he must not tinkle we must not tinkle you must not tinkle they must not tinkle
V-ing form
I must not be tinkling you must not be tinkling he must not be tinkling we must not be tinkling you must not be tinkling they must not be tinkling
Perfect
I must not have tinkled you must not have tinkled he must not have tinkled we must not have tinkled you must not have tinkled they must not have tinkled
V-ing perfect
I must not have been tinkling you must not have been tinkling he must not have been tinkling we must not have been tinkling you must not have been tinkling they must not have been tinkling
Interrogative form
Simple form
must I tinkle? must you tinkle? must he tinkle? must we tinkle? must you tinkle? must they tinkle?
V-ing form
must I be tinkling? must you be tinkling? must he be tinkling? must we be tinkling? must you be tinkling? must they be tinkling?
Perfect
must I have tinkled? must you have tinkled? must he have tinkled? must we have tinkled? must you have tinkled? must they have tinkled?
V-ing perfect
must I have been tinkling? must you have been tinkling? must he have been tinkling? must we have been tinkling? must you have been tinkling? must they have been tinkling?
Interro-negative form
Simple form
must I not tinkle? must you not tinkle? must he not tinkle? must we not tinkle? must you not tinkle? must they not tinkle?
V-ing form
must I not be tinkling? must you not be tinkling? must he not be tinkling? must we not be tinkling? must you not be tinkling? must they not be tinkling?
Perfect
must I not have tinkled? must you not have tinkled? must he not have tinkled? must we not have tinkled? must you not have tinkled? must they not have tinkled?
V-ing perfect
must I not have been tinkling? must you not have been tinkling? must he not have been tinkling? must we not have been tinkling? must you not have been tinkling? must they not have been tinkling?