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 mustn't fecundate you mustn't fecundate she mustn't fecundate we mustn't fecundate you mustn't fecundate they mustn't fecundate
V-ing form
I mustn't be fecundating you mustn't be fecundating she mustn't be fecundating we mustn't be fecundating you mustn't be fecundating they mustn't be fecundating
Perfect
I mustn't have fecundated you mustn't have fecundated she mustn't have fecundated we mustn't have fecundated you mustn't have fecundated they mustn't have fecundated
V-ing perfect
I mustn't have been fecundating you mustn't have been fecundating she mustn't have been fecundating we mustn't have been fecundating you mustn't have been fecundating they mustn't 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
mustn't I fecundate? mustn't you fecundate? mustn't she fecundate? mustn't we fecundate? mustn't you fecundate? mustn't they fecundate?
V-ing form
mustn't I be fecundating? mustn't you be fecundating? mustn't she be fecundating? mustn't we be fecundating? mustn't you be fecundating? mustn't they be fecundating?
Perfect
mustn't I have fecundated? mustn't you have fecundated? mustn't she have fecundated? mustn't we have fecundated? mustn't you have fecundated? mustn't they have fecundated?
V-ing perfect
mustn't I have been fecundating? mustn't you have been fecundating? mustn't she have been fecundating? mustn't we have been fecundating? mustn't you have been fecundating? mustn't they have been fecundating?