I must fecundate you must fecundate she must fecundate we must fecundate you must fecundate they must fecundate
V-ing form
I must be fecundating you must be fecundating she must be fecundating we must be fecundating you must be fecundating they must be fecundating
Perfect
I must have fecundated you must have fecundated she must have fecundated we must have fecundated you must have fecundated they must have fecundated
V-ing perfect
I must have been fecundating you must have been fecundating she must have been fecundating we must have been fecundating you must have been fecundating they must have been fecundating
Negation
Simple form
I must not fecundate you must not fecundate she must not fecundate we must not fecundate you must not fecundate they must not fecundate
V-ing form
I must not be fecundating you must not be fecundating she must not be fecundating we must not be fecundating you must not be fecundating they must not be fecundating
Perfect
I must not have fecundated you must not have fecundated she must not have fecundated we must not have fecundated you must not have fecundated they must not have fecundated
V-ing perfect
I must not have been fecundating you must not have been fecundating she must not have been fecundating we must not have been fecundating you must not have been fecundating they must not have been fecundating
Interrogative form
Simple form
must I fecundate? must you fecundate? must she fecundate? must we fecundate? must you fecundate? must they fecundate?
V-ing form
must I be fecundating? must you be fecundating? must she be fecundating? must we be fecundating? must you be fecundating? must they be fecundating?
Perfect
must I have fecundated? must you have fecundated? must she have fecundated? must we have fecundated? must you have fecundated? must they have fecundated?
V-ing perfect
must I have been fecundating? must you have been fecundating? must she have been fecundating? must we have been fecundating? must you have been fecundating? must they have been fecundating?
Interro-negative form
Simple form
must I not fecundate? must you not fecundate? must she not fecundate? must we not fecundate? must you not fecundate? must they not fecundate?
V-ing form
must I not be fecundating? must you not be fecundating? must she not be fecundating? must we not be fecundating? must you not be fecundating? must they not be fecundating?
Perfect
must I not have fecundated? must you not have fecundated? must she not have fecundated? must we not have fecundated? must you not have fecundated? must they not have fecundated?
V-ing perfect
must I not have been fecundating? must you not have been fecundating? must she not have been fecundating? must we not have been fecundating? must you not have been fecundating? must they not have been fecundating?