I must kindle you must kindle he must kindle we must kindle you must kindle they must kindle
V-ing form
I must be kindling you must be kindling he must be kindling we must be kindling you must be kindling they must be kindling
Perfect
I must have kindled you must have kindled he must have kindled we must have kindled you must have kindled they must have kindled
V-ing perfect
I must have been kindling you must have been kindling he must have been kindling we must have been kindling you must have been kindling they must have been kindling
Negation
Simple form
I must not kindle you must not kindle he must not kindle we must not kindle you must not kindle they must not kindle
V-ing form
I must not be kindling you must not be kindling he must not be kindling we must not be kindling you must not be kindling they must not be kindling
Perfect
I must not have kindled you must not have kindled he must not have kindled we must not have kindled you must not have kindled they must not have kindled
V-ing perfect
I must not have been kindling you must not have been kindling he must not have been kindling we must not have been kindling you must not have been kindling they must not have been kindling
Interrogative form
Simple form
must I kindle? must you kindle? must he kindle? must we kindle? must you kindle? must they kindle?
V-ing form
must I be kindling? must you be kindling? must he be kindling? must we be kindling? must you be kindling? must they be kindling?
Perfect
must I have kindled? must you have kindled? must he have kindled? must we have kindled? must you have kindled? must they have kindled?
V-ing perfect
must I have been kindling? must you have been kindling? must he have been kindling? must we have been kindling? must you have been kindling? must they have been kindling?
Interro-negative form
Simple form
must I not kindle? must you not kindle? must he not kindle? must we not kindle? must you not kindle? must they not kindle?
V-ing form
must I not be kindling? must you not be kindling? must he not be kindling? must we not be kindling? must you not be kindling? must they not be kindling?
Perfect
must I not have kindled? must you not have kindled? must he not have kindled? must we not have kindled? must you not have kindled? must they not have kindled?
V-ing perfect
must I not have been kindling? must you not have been kindling? must he not have been kindling? must we not have been kindling? must you not have been kindling? must they not have been kindling?